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Finding the Fourth Proportional to 424,208.25, 636,150.78 and 187,421.76

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Solution

The fourth proportional to 424,208.25, 636,150.78 and 187,421.76 is: 281,061.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,208.25 : 636,150.78 = 187,421.76 : x
  2. Step 2: Convert to fraction form
    424,208.25/636,150.78 = 187,421.76/x
  3. Step 3: Cross multiply
    424,208.25x = 636,150.78 × 187,421.76
  4. Step 4: Simplify right side
    424,208.25x = 119,228,498,812.97
  5. Step 5: Solve for x
    x = 119,228,498,812.97/424,208.25
  6. Step 6: Final answer
    x = 281,061.24

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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.