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Finding the Fourth Proportional to 415,728.20, 623,592.30 and 149,497.40

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Solution

The fourth proportional to 415,728.20, 623,592.30 and 149,497.40 is: 224,246.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,728.20 : 623,592.30 = 149,497.40 : x
  2. Step 2: Convert to fraction form
    415,728.20/623,592.30 = 149,497.40/x
  3. Step 3: Cross multiply
    415,728.20x = 623,592.30 × 149,497.40
  4. Step 4: Simplify right side
    415,728.20x = 93,225,427,510.02
  5. Step 5: Solve for x
    x = 93,225,427,510.02/415,728.20
  6. Step 6: Final answer
    x = 224,246.10

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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.