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Finding the Fourth Proportional to 424,531.55, 636,779.10 and 144,048.80

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Solution

The fourth proportional to 424,531.55, 636,779.10 and 144,048.80 is: 216,067.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,531.55 : 636,779.10 = 144,048.80 : x
  2. Step 2: Convert to fraction form
    424,531.55/636,779.10 = 144,048.80/x
  3. Step 3: Cross multiply
    424,531.55x = 636,779.10 × 144,048.80
  4. Step 4: Simplify right side
    424,531.55x = 91,727,265,220.08
  5. Step 5: Solve for x
    x = 91,727,265,220.08/424,531.55
  6. Step 6: Final answer
    x = 216,067.02

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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.