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Finding the Fourth Proportional to 475,347.12, 713,013.08 and 115,520.88

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Solution

The fourth proportional to 475,347.12, 713,013.08 and 115,520.88 is: 173,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,347.12 : 713,013.08 = 115,520.88 : x
  2. Step 2: Convert to fraction form
    475,347.12/713,013.08 = 115,520.88/x
  3. Step 3: Cross multiply
    475,347.12x = 713,013.08 × 115,520.88
  4. Step 4: Simplify right side
    475,347.12x = 82,367,898,453.11
  5. Step 5: Solve for x
    x = 82,367,898,453.11/475,347.12
  6. Step 6: Final answer
    x = 173,279.47

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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.