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Finding the Fourth Proportional to 489,959.15, 676,162.59 and 272,184.32

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Solution

The fourth proportional to 489,959.15, 676,162.59 and 272,184.32 is: 375,624.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,959.15 : 676,162.59 = 272,184.32 : x
  2. Step 2: Convert to fraction form
    489,959.15/676,162.59 = 272,184.32/x
  3. Step 3: Cross multiply
    489,959.15x = 676,162.59 × 272,184.32
  4. Step 4: Simplify right side
    489,959.15x = 184,040,853,171.38
  5. Step 5: Solve for x
    x = 184,040,853,171.38/489,959.15
  6. Step 6: Final answer
    x = 375,624.89

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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.