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Finding the Fourth Proportional to 271,625.40, 407,110.05 and 138,437.10

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Solution

The fourth proportional to 271,625.40, 407,110.05 and 138,437.10 is: 207,488.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,625.40 : 407,110.05 = 138,437.10 : x
  2. Step 2: Convert to fraction form
    271,625.40/407,110.05 = 138,437.10/x
  3. Step 3: Cross multiply
    271,625.40x = 407,110.05 × 138,437.10
  4. Step 4: Simplify right side
    271,625.40x = 56,359,134,702.86
  5. Step 5: Solve for x
    x = 56,359,134,702.86/271,625.40
  6. Step 6: Final answer
    x = 207,488.46

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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.