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Finding the Fourth Proportional to 482,494.88, 665,830.09 and 278,538.91

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Solution

The fourth proportional to 482,494.88, 665,830.09 and 278,538.91 is: 384,376.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,494.88 : 665,830.09 = 278,538.91 : x
  2. Step 2: Convert to fraction form
    482,494.88/665,830.09 = 278,538.91/x
  3. Step 3: Cross multiply
    482,494.88x = 665,830.09 × 278,538.91
  4. Step 4: Simplify right side
    482,494.88x = 185,459,587,513.80
  5. Step 5: Solve for x
    x = 185,459,587,513.80/482,494.88
  6. Step 6: Final answer
    x = 384,376.28

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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.