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Finding the Fourth Proportional to 486,875.60, 671,875.92 and 272,017.28

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Solution

The fourth proportional to 486,875.60, 671,875.92 and 272,017.28 is: 375,376.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,875.60 : 671,875.92 = 272,017.28 : x
  2. Step 2: Convert to fraction form
    486,875.60/671,875.92 = 272,017.28/x
  3. Step 3: Cross multiply
    486,875.60x = 671,875.92 × 272,017.28
  4. Step 4: Simplify right side
    486,875.60x = 182,761,860,255.90
  5. Step 5: Solve for x
    x = 182,761,860,255.90/486,875.60
  6. Step 6: Final answer
    x = 375,376.91

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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.