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Finding the Fourth Proportional to 482,478.72, 665,831.28 and 267,611.76

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Solution

The fourth proportional to 482,478.72, 665,831.28 and 267,611.76 is: 369,310.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,478.72 : 665,831.28 = 267,611.76 : x
  2. Step 2: Convert to fraction form
    482,478.72/665,831.28 = 267,611.76/x
  3. Step 3: Cross multiply
    482,478.72x = 665,831.28 × 267,611.76
  4. Step 4: Simplify right side
    482,478.72x = 178,184,280,703.85
  5. Step 5: Solve for x
    x = 178,184,280,703.85/482,478.72
  6. Step 6: Final answer
    x = 369,310.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.