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Finding the Fourth Proportional to 387,325.44, 580,823.04 and 147,398.40

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Solution

The fourth proportional to 387,325.44, 580,823.04 and 147,398.40 is: 221,034.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,325.44 : 580,823.04 = 147,398.40 : x
  2. Step 2: Convert to fraction form
    387,325.44/580,823.04 = 147,398.40/x
  3. Step 3: Cross multiply
    387,325.44x = 580,823.04 × 147,398.40
  4. Step 4: Simplify right side
    387,325.44x = 85,612,386,779.14
  5. Step 5: Solve for x
    x = 85,612,386,779.14/387,325.44
  6. Step 6: Final answer
    x = 221,034.76

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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.