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Finding the Fourth Proportional to 610,056.20, 915,084.30 and 189,374.60

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Solution

The fourth proportional to 610,056.20, 915,084.30 and 189,374.60 is: 284,061.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,056.20 : 915,084.30 = 189,374.60 : x
  2. Step 2: Convert to fraction form
    610,056.20/915,084.30 = 189,374.60/x
  3. Step 3: Cross multiply
    610,056.20x = 915,084.30 × 189,374.60
  4. Step 4: Simplify right side
    610,056.20x = 173,293,723,278.78
  5. Step 5: Solve for x
    x = 173,293,723,278.78/610,056.20
  6. Step 6: Final answer
    x = 284,061.90

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Similar ratio
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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.