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Finding the Fourth Proportional to 218,899.26, 328,348.98 and 52,687.26

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Solution

The fourth proportional to 218,899.26, 328,348.98 and 52,687.26 is: 79,030.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,899.26 : 328,348.98 = 52,687.26 : x
  2. Step 2: Convert to fraction form
    218,899.26/328,348.98 = 52,687.26/x
  3. Step 3: Cross multiply
    218,899.26x = 328,348.98 × 52,687.26
  4. Step 4: Simplify right side
    218,899.26x = 17,299,808,079.99
  5. Step 5: Solve for x
    x = 17,299,808,079.99/218,899.26
  6. Step 6: Final answer
    x = 79,030.91

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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.