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Finding the Fourth Proportional to 381,308.40, 571,966.44 and 115,071.12

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Solution

The fourth proportional to 381,308.40, 571,966.44 and 115,071.12 is: 172,607.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,308.40 : 571,966.44 = 115,071.12 : x
  2. Step 2: Convert to fraction form
    381,308.40/571,966.44 = 115,071.12/x
  3. Step 3: Cross multiply
    381,308.40x = 571,966.44 × 115,071.12
  4. Step 4: Simplify right side
    381,308.40x = 65,816,818,853.21
  5. Step 5: Solve for x
    x = 65,816,818,853.21/381,308.40
  6. Step 6: Final answer
    x = 172,607.84

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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.