Home / 385,515.90-578,317.05-119,274.30

Finding the Fourth Proportional to 385,515.90, 578,317.05 and 119,274.30

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Solution

The fourth proportional to 385,515.90, 578,317.05 and 119,274.30 is: 178,924.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,515.90 : 578,317.05 = 119,274.30 : x
  2. Step 2: Convert to fraction form
    385,515.90/578,317.05 = 119,274.30/x
  3. Step 3: Cross multiply
    385,515.90x = 578,317.05 × 119,274.30
  4. Step 4: Simplify right side
    385,515.90x = 68,978,361,316.82
  5. Step 5: Solve for x
    x = 68,978,361,316.82/385,515.90
  6. Step 6: Final answer
    x = 178,924.82

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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.