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Finding the Fourth Proportional to 247,603.02, 341,691.90 and 138,708.12

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Solution

The fourth proportional to 247,603.02, 341,691.90 and 138,708.12 is: 191,417.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,603.02 : 341,691.90 = 138,708.12 : x
  2. Step 2: Convert to fraction form
    247,603.02/341,691.90 = 138,708.12/x
  3. Step 3: Cross multiply
    247,603.02x = 341,691.90 × 138,708.12
  4. Step 4: Simplify right side
    247,603.02x = 47,395,441,068.23
  5. Step 5: Solve for x
    x = 47,395,441,068.23/247,603.02
  6. Step 6: Final answer
    x = 191,417.06

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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.