Home / 387,102.13-580,652.98-120,885.46

Finding the Fourth Proportional to 387,102.13, 580,652.98 and 120,885.46

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Solution

The fourth proportional to 387,102.13, 580,652.98 and 120,885.46 is: 181,328.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,102.13 : 580,652.98 = 120,885.46 : x
  2. Step 2: Convert to fraction form
    387,102.13/580,652.98 = 120,885.46/x
  3. Step 3: Cross multiply
    387,102.13x = 580,652.98 × 120,885.46
  4. Step 4: Simplify right side
    387,102.13x = 70,192,500,833.82
  5. Step 5: Solve for x
    x = 70,192,500,833.82/387,102.13
  6. Step 6: Final answer
    x = 181,328.12

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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.