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Finding the Fourth Proportional to 610,218.52, 915,286.74 and 210,864.76

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Solution

The fourth proportional to 610,218.52, 915,286.74 and 210,864.76 is: 316,282.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,218.52 : 915,286.74 = 210,864.76 : x
  2. Step 2: Convert to fraction form
    610,218.52/915,286.74 = 210,864.76/x
  3. Step 3: Cross multiply
    610,218.52x = 915,286.74 × 210,864.76
  4. Step 4: Simplify right side
    610,218.52x = 193,001,718,761.28
  5. Step 5: Solve for x
    x = 193,001,718,761.28/610,218.52
  6. Step 6: Final answer
    x = 316,282.96

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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.