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Finding the Fourth Proportional to 330,712.16, 455,572.72 and 239,800.96

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Solution

The fourth proportional to 330,712.16, 455,572.72 and 239,800.96 is: 330,337.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,712.16 : 455,572.72 = 239,800.96 : x
  2. Step 2: Convert to fraction form
    330,712.16/455,572.72 = 239,800.96/x
  3. Step 3: Cross multiply
    330,712.16x = 455,572.72 × 239,800.96
  4. Step 4: Simplify right side
    330,712.16x = 109,246,775,605.81
  5. Step 5: Solve for x
    x = 109,246,775,605.81/330,712.16
  6. Step 6: Final answer
    x = 330,337.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.