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Finding the Fourth Proportional to 385,899.76, 532,726.77 and 271,276.66

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Solution

The fourth proportional to 385,899.76, 532,726.77 and 271,276.66 is: 374,491.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,899.76 : 532,726.77 = 271,276.66 : x
  2. Step 2: Convert to fraction form
    385,899.76/532,726.77 = 271,276.66/x
  3. Step 3: Cross multiply
    385,899.76x = 532,726.77 × 271,276.66
  4. Step 4: Simplify right side
    385,899.76x = 144,516,338,858.19
  5. Step 5: Solve for x
    x = 144,516,338,858.19/385,899.76
  6. Step 6: Final answer
    x = 374,491.91

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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.