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Finding the Fourth Proportional to 247,590.47, 371,439.01 and 76,808.72

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Solution

The fourth proportional to 247,590.47, 371,439.01 and 76,808.72 is: 115,229.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,590.47 : 371,439.01 = 76,808.72 : x
  2. Step 2: Convert to fraction form
    247,590.47/371,439.01 = 76,808.72/x
  3. Step 3: Cross multiply
    247,590.47x = 371,439.01 × 76,808.72
  4. Step 4: Simplify right side
    247,590.47x = 28,529,754,532.12
  5. Step 5: Solve for x
    x = 28,529,754,532.12/247,590.47
  6. Step 6: Final answer
    x = 115,229.62

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1.5x scale

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.