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Finding the Fourth Proportional to 425,508.49, 638,318.07 and 155,594.60

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Solution

The fourth proportional to 425,508.49, 638,318.07 and 155,594.60 is: 233,412.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,508.49 : 638,318.07 = 155,594.60 : x
  2. Step 2: Convert to fraction form
    425,508.49/638,318.07 = 155,594.60/x
  3. Step 3: Cross multiply
    425,508.49x = 638,318.07 × 155,594.60
  4. Step 4: Simplify right side
    425,508.49x = 99,318,842,181.25
  5. Step 5: Solve for x
    x = 99,318,842,181.25/425,508.49
  6. Step 6: Final answer
    x = 233,412.13

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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.