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Finding the Fourth Proportional to 361,943.60, 542,652.96 and 243,320.72

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Solution

The fourth proportional to 361,943.60, 542,652.96 and 243,320.72 is: 364,804.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,943.60 : 542,652.96 = 243,320.72 : x
  2. Step 2: Convert to fraction form
    361,943.60/542,652.96 = 243,320.72/x
  3. Step 3: Cross multiply
    361,943.60x = 542,652.96 × 243,320.72
  4. Step 4: Simplify right side
    361,943.60x = 132,038,708,937.33
  5. Step 5: Solve for x
    x = 132,038,708,937.33/361,943.60
  6. Step 6: Final answer
    x = 364,804.65

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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.