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Finding the Fourth Proportional to 871,691.64, 1,307,439.54 and 240,695.16

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Solution

The fourth proportional to 871,691.64, 1,307,439.54 and 240,695.16 is: 361,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,691.64 : 1,307,439.54 = 240,695.16 : x
  2. Step 2: Convert to fraction form
    871,691.64/1,307,439.54 = 240,695.16/x
  3. Step 3: Cross multiply
    871,691.64x = 1,307,439.54 × 240,695.16
  4. Step 4: Simplify right side
    871,691.64x = 314,694,369,270.63
  5. Step 5: Solve for x
    x = 314,694,369,270.63/871,691.64
  6. Step 6: Final answer
    x = 361,015.70

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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.