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Finding the Fourth Proportional to 381,326.27, 571,990.10 and 156,530.03

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Solution

The fourth proportional to 381,326.27, 571,990.10 and 156,530.03 is: 234,795.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,326.27 : 571,990.10 = 156,530.03 : x
  2. Step 2: Convert to fraction form
    381,326.27/571,990.10 = 156,530.03/x
  3. Step 3: Cross multiply
    381,326.27x = 571,990.10 × 156,530.03
  4. Step 4: Simplify right side
    381,326.27x = 89,533,623,870.10
  5. Step 5: Solve for x
    x = 89,533,623,870.10/381,326.27
  6. Step 6: Final answer
    x = 234,795.32

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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.