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Finding the Fourth Proportional to 253,101.71, 349,265.36 and 139,917.71

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Solution

The fourth proportional to 253,101.71, 349,265.36 and 139,917.71 is: 193,078.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,101.71 : 349,265.36 = 139,917.71 : x
  2. Step 2: Convert to fraction form
    253,101.71/349,265.36 = 139,917.71/x
  3. Step 3: Cross multiply
    253,101.71x = 349,265.36 × 139,917.71
  4. Step 4: Simplify right side
    253,101.71x = 48,868,406,907.61
  5. Step 5: Solve for x
    x = 48,868,406,907.61/253,101.71
  6. Step 6: Final answer
    x = 193,078.14

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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.