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Finding the Fourth Proportional to 265,005.18, 397,468.80 and 87,517.98

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Solution

The fourth proportional to 265,005.18, 397,468.80 and 87,517.98 is: 131,264.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,005.18 : 397,468.80 = 87,517.98 : x
  2. Step 2: Convert to fraction form
    265,005.18/397,468.80 = 87,517.98/x
  3. Step 3: Cross multiply
    265,005.18x = 397,468.80 × 87,517.98
  4. Step 4: Simplify right side
    265,005.18x = 34,785,666,489.02
  5. Step 5: Solve for x
    x = 34,785,666,489.02/265,005.18
  6. Step 6: Final answer
    x = 131,264.10

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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.