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Finding the Fourth Proportional to 424,077.50, 636,078.90 and 254,459.18

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Solution

The fourth proportional to 424,077.50, 636,078.90 and 254,459.18 is: 381,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,077.50 : 636,078.90 = 254,459.18 : x
  2. Step 2: Convert to fraction form
    424,077.50/636,078.90 = 254,459.18/x
  3. Step 3: Cross multiply
    424,077.50x = 636,078.90 × 254,459.18
  4. Step 4: Simplify right side
    424,077.50x = 161,856,115,309.30
  5. Step 5: Solve for x
    x = 161,856,115,309.30/424,077.50
  6. Step 6: Final answer
    x = 381,666.36

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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.