Home / 257,121,557,924.74-385,427,580,222.12-120,739,545,175.89

Finding the Fourth Proportional to 257,121,557,924.74, 385,427,580,222.12 and 120,739,545,175.89

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Solution

The fourth proportional to 257,121,557,924.74, 385,427,580,222.12 and 120,739,545,175.89 is: 180,989,688,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,121,557,924.74 : 385,427,580,222.12 = 120,739,545,175.89 : x
  2. Step 2: Convert to fraction form
    257,121,557,924.74/385,427,580,222.12 = 120,739,545,175.89/x
  3. Step 3: Cross multiply
    257,121,557,924.74x = 385,427,580,222.12 × 120,739,545,175.89
  4. Step 4: Simplify right side
    257,121,557,924.74x = 46,536,350,734,262,625,894,400
  5. Step 5: Solve for x
    x = 46,536,350,734,262,625,894,400/257,121,557,924.74
  6. Step 6: Final answer
    x = 180,989,688,728.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.