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Finding the Fourth Proportional to 387,652.67, 581,479.15 and 121,433.87

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Solution

The fourth proportional to 387,652.67, 581,479.15 and 121,433.87 is: 182,150.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,652.67 : 581,479.15 = 121,433.87 : x
  2. Step 2: Convert to fraction form
    387,652.67/581,479.15 = 121,433.87/x
  3. Step 3: Cross multiply
    387,652.67x = 581,479.15 × 121,433.87
  4. Step 4: Simplify right side
    387,652.67x = 70,611,263,508.81
  5. Step 5: Solve for x
    x = 70,611,263,508.81/387,652.67
  6. Step 6: Final answer
    x = 182,150.85

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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.