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Finding the Fourth Proportional to 386,881.48, 580,348.88 and 162,015.50

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Solution

The fourth proportional to 386,881.48, 580,348.88 and 162,015.50 is: 243,034.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,881.48 : 580,348.88 = 162,015.50 : x
  2. Step 2: Convert to fraction form
    386,881.48/580,348.88 = 162,015.50/x
  3. Step 3: Cross multiply
    386,881.48x = 580,348.88 × 162,015.50
  4. Step 4: Simplify right side
    386,881.48x = 94,025,516,601.70
  5. Step 5: Solve for x
    x = 94,025,516,601.70/386,881.48
  6. Step 6: Final answer
    x = 243,034.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.