Home / 279,307.25-385,440.77-151,980.65

Finding the Fourth Proportional to 279,307.25, 385,440.77 and 151,980.65

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Solution

The fourth proportional to 279,307.25, 385,440.77 and 151,980.65 is: 209,731.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,307.25 : 385,440.77 = 151,980.65 : x
  2. Step 2: Convert to fraction form
    279,307.25/385,440.77 = 151,980.65/x
  3. Step 3: Cross multiply
    279,307.25x = 385,440.77 × 151,980.65
  4. Step 4: Simplify right side
    279,307.25x = 58,579,538,001.20
  5. Step 5: Solve for x
    x = 58,579,538,001.20/279,307.25
  6. Step 6: Final answer
    x = 209,731.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.