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Finding the Fourth Proportional to 424,145.20, 636,184.68 and 187,495.60

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Solution

The fourth proportional to 424,145.20, 636,184.68 and 187,495.60 is: 281,228.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,145.20 : 636,184.68 = 187,495.60 : x
  2. Step 2: Convert to fraction form
    424,145.20/636,184.68 = 187,495.60/x
  3. Step 3: Cross multiply
    424,145.20x = 636,184.68 × 187,495.60
  4. Step 4: Simplify right side
    424,145.20x = 119,281,828,287.41
  5. Step 5: Solve for x
    x = 119,281,828,287.41/424,145.20
  6. Step 6: Final answer
    x = 281,228.76

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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.