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Finding the Fourth Proportional to 399,182.66, 549,936.33 and 278,104.94

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Solution

The fourth proportional to 399,182.66, 549,936.33 and 278,104.94 is: 383,132.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,182.66 : 549,936.33 = 278,104.94 : x
  2. Step 2: Convert to fraction form
    399,182.66/549,936.33 = 278,104.94/x
  3. Step 3: Cross multiply
    399,182.66x = 549,936.33 × 278,104.94
  4. Step 4: Simplify right side
    399,182.66x = 152,940,010,058.47
  5. Step 5: Solve for x
    x = 152,940,010,058.47/399,182.66
  6. Step 6: Final answer
    x = 383,132.90

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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.