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Finding the Fourth Proportional to 253,033.08, 349,179.57 and 138,306.57

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Solution

The fourth proportional to 253,033.08, 349,179.57 and 138,306.57 is: 190,859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,033.08 : 349,179.57 = 138,306.57 : x
  2. Step 2: Convert to fraction form
    253,033.08/349,179.57 = 138,306.57/x
  3. Step 3: Cross multiply
    253,033.08x = 349,179.57 × 138,306.57
  4. Step 4: Simplify right side
    253,033.08x = 48,293,828,640.77
  5. Step 5: Solve for x
    x = 48,293,828,640.77/253,033.08
  6. Step 6: Final answer
    x = 190,859.74

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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.