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Finding the Fourth Proportional to 348,711.98, 523,067.98 and 99,387.50

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Solution

The fourth proportional to 348,711.98, 523,067.98 and 99,387.50 is: 149,081.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,711.98 : 523,067.98 = 99,387.50 : x
  2. Step 2: Convert to fraction form
    348,711.98/523,067.98 = 99,387.50/x
  3. Step 3: Cross multiply
    348,711.98x = 523,067.98 × 99,387.50
  4. Step 4: Simplify right side
    348,711.98x = 51,986,418,862.25
  5. Step 5: Solve for x
    x = 51,986,418,862.25/348,711.98
  6. Step 6: Final answer
    x = 149,081.25

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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.