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Finding the Fourth Proportional to 399,205.60, 598,966.80 and 162,565.60

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Solution

The fourth proportional to 399,205.60, 598,966.80 and 162,565.60 is: 243,912.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,205.60 : 598,966.80 = 162,565.60 : x
  2. Step 2: Convert to fraction form
    399,205.60/598,966.80 = 162,565.60/x
  3. Step 3: Cross multiply
    399,205.60x = 598,966.80 × 162,565.60
  4. Step 4: Simplify right side
    399,205.60x = 97,371,397,222.08
  5. Step 5: Solve for x
    x = 97,371,397,222.08/399,205.60
  6. Step 6: Final answer
    x = 243,912.90

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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.