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Finding the Fourth Proportional to 482,312.64, 665,558.88 and 278,372.16

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Solution

The fourth proportional to 482,312.64, 665,558.88 and 278,372.16 is: 384,134.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,312.64 : 665,558.88 = 278,372.16 : x
  2. Step 2: Convert to fraction form
    482,312.64/665,558.88 = 278,372.16/x
  3. Step 3: Cross multiply
    482,312.64x = 665,558.88 × 278,372.16
  4. Step 4: Simplify right side
    482,312.64x = 185,273,063,032.78
  5. Step 5: Solve for x
    x = 185,273,063,032.78/482,312.64
  6. Step 6: Final answer
    x = 384,134.79

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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.