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Finding the Fourth Proportional to 265,979.34, 399,156.12 and 240,569.64

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Solution

The fourth proportional to 265,979.34, 399,156.12 and 240,569.64 is: 361,023.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,979.34 : 399,156.12 = 240,569.64 : x
  2. Step 2: Convert to fraction form
    265,979.34/399,156.12 = 240,569.64/x
  3. Step 3: Cross multiply
    265,979.34x = 399,156.12 × 240,569.64
  4. Step 4: Simplify right side
    265,979.34x = 96,024,844,092.20
  5. Step 5: Solve for x
    x = 96,024,844,092.20/265,979.34
  6. Step 6: Final answer
    x = 361,023.69

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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.