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Finding the Fourth Proportional to 475,394.15, 712,940.61 and 155,472.10

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Solution

The fourth proportional to 475,394.15, 712,940.61 and 155,472.10 is: 233,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,394.15 : 712,940.61 = 155,472.10 : x
  2. Step 2: Convert to fraction form
    475,394.15/712,940.61 = 155,472.10/x
  3. Step 3: Cross multiply
    475,394.15x = 712,940.61 × 155,472.10
  4. Step 4: Simplify right side
    475,394.15x = 110,842,373,811.98
  5. Step 5: Solve for x
    x = 110,842,373,811.98/475,394.15
  6. Step 6: Final answer
    x = 233,158.89

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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.