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Finding the Fourth Proportional to 253,616.52, 349,988.28 and 137,329.40

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Solution

The fourth proportional to 253,616.52, 349,988.28 and 137,329.40 is: 189,513.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,616.52 : 349,988.28 = 137,329.40 : x
  2. Step 2: Convert to fraction form
    253,616.52/349,988.28 = 137,329.40/x
  3. Step 3: Cross multiply
    253,616.52x = 349,988.28 × 137,329.40
  4. Step 4: Simplify right side
    253,616.52x = 48,063,680,499.43
  5. Step 5: Solve for x
    x = 48,063,680,499.43/253,616.52
  6. Step 6: Final answer
    x = 189,513.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.