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Finding the Fourth Proportional to 580,521.20, 871,118.08 and 243,532

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Solution

The fourth proportional to 580,521.20, 871,118.08 and 243,532 is: 365,439.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,521.20 : 871,118.08 = 243,532 : x
  2. Step 2: Convert to fraction form
    580,521.20/871,118.08 = 243,532/x
  3. Step 3: Cross multiply
    580,521.20x = 871,118.08 × 243,532
  4. Step 4: Simplify right side
    580,521.20x = 212,145,128,258.56
  5. Step 5: Solve for x
    x = 212,145,128,258.56/580,521.20
  6. Step 6: Final answer
    x = 365,439.07

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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.