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Finding the Fourth Proportional to 376,409.79, 563,876.55 and 218,306.16

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Solution

The fourth proportional to 376,409.79, 563,876.55 and 218,306.16 is: 327,031.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,409.79 : 563,876.55 = 218,306.16 : x
  2. Step 2: Convert to fraction form
    376,409.79/563,876.55 = 218,306.16/x
  3. Step 3: Cross multiply
    376,409.79x = 563,876.55 × 218,306.16
  4. Step 4: Simplify right side
    376,409.79x = 123,097,724,344.55
  5. Step 5: Solve for x
    x = 123,097,724,344.55/376,409.79
  6. Step 6: Final answer
    x = 327,031.14

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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.