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Finding the Fourth Proportional to 218,991.39, 328,487.08 and 52,779.39

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Solution

The fourth proportional to 218,991.39, 328,487.08 and 52,779.39 is: 79,169.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,991.39 : 328,487.08 = 52,779.39 : x
  2. Step 2: Convert to fraction form
    218,991.39/328,487.08 = 52,779.39/x
  3. Step 3: Cross multiply
    218,991.39x = 328,487.08 × 52,779.39
  4. Step 4: Simplify right side
    218,991.39x = 17,337,347,705.28
  5. Step 5: Solve for x
    x = 17,337,347,705.28/218,991.39
  6. Step 6: Final answer
    x = 79,169.08

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1.5x scale

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.