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Finding the Fourth Proportional to 425,789.04, 638,683.52 and 238,815.12

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Solution

The fourth proportional to 425,789.04, 638,683.52 and 238,815.12 is: 358,222.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,789.04 : 638,683.52 = 238,815.12 : x
  2. Step 2: Convert to fraction form
    425,789.04/638,683.52 = 238,815.12/x
  3. Step 3: Cross multiply
    425,789.04x = 638,683.52 × 238,815.12
  4. Step 4: Simplify right side
    425,789.04x = 152,527,281,470.82
  5. Step 5: Solve for x
    x = 152,527,281,470.82/425,789.04
  6. Step 6: Final answer
    x = 358,222.66

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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.