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Finding the Fourth Proportional to 424,413, 636,484.25 and 140,050.55

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Solution

The fourth proportional to 424,413, 636,484.25 and 140,050.55 is: 210,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,413 : 636,484.25 = 140,050.55 : x
  2. Step 2: Convert to fraction form
    424,413/636,484.25 = 140,050.55/x
  3. Step 3: Cross multiply
    424,413x = 636,484.25 × 140,050.55
  4. Step 4: Simplify right side
    424,413x = 89,139,971,220.17
  5. Step 5: Solve for x
    x = 89,139,971,220.17/424,413
  6. Step 6: Final answer
    x = 210,031.20

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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.