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Finding the Fourth Proportional to 218,958.80, 328,437.59 and 52,746.80

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Solution

The fourth proportional to 218,958.80, 328,437.59 and 52,746.80 is: 79,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,958.80 : 328,437.59 = 52,746.80 : x
  2. Step 2: Convert to fraction form
    218,958.80/328,437.59 = 52,746.80/x
  3. Step 3: Cross multiply
    218,958.80x = 328,437.59 × 52,746.80
  4. Step 4: Simplify right side
    218,958.80x = 17,324,029,966.29
  5. Step 5: Solve for x
    x = 17,324,029,966.29/218,958.80
  6. Step 6: Final answer
    x = 79,120.05

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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.