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Finding the Fourth Proportional to 218,900.76, 328,351.23 and 52,688.76

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Solution

The fourth proportional to 218,900.76, 328,351.23 and 52,688.76 is: 79,033.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,900.76 : 328,351.23 = 52,688.76 : x
  2. Step 2: Convert to fraction form
    218,900.76/328,351.23 = 52,688.76/x
  3. Step 3: Cross multiply
    218,900.76x = 328,351.23 × 52,688.76
  4. Step 4: Simplify right side
    218,900.76x = 17,300,419,153.17
  5. Step 5: Solve for x
    x = 17,300,419,153.17/218,900.76
  6. Step 6: Final answer
    x = 79,033.16

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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.