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Finding the Fourth Proportional to 218,985.73, 328,478.05 and 52,773.73

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Solution

The fourth proportional to 218,985.73, 328,478.05 and 52,773.73 is: 79,160.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,985.73 : 328,478.05 = 52,773.73 : x
  2. Step 2: Convert to fraction form
    218,985.73/328,478.05 = 52,773.73/x
  3. Step 3: Cross multiply
    218,985.73x = 328,478.05 × 52,773.73
  4. Step 4: Simplify right side
    218,985.73x = 17,335,011,166.40
  5. Step 5: Solve for x
    x = 17,335,011,166.40/218,985.73
  6. Step 6: Final answer
    x = 79,160.46

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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.