Home / 387,117.20-580,749.24-134,387.84

Finding the Fourth Proportional to 387,117.20, 580,749.24 and 134,387.84

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Solution

The fourth proportional to 387,117.20, 580,749.24 and 134,387.84 is: 201,607.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,117.20 : 580,749.24 = 134,387.84 : x
  2. Step 2: Convert to fraction form
    387,117.20/580,749.24 = 134,387.84/x
  3. Step 3: Cross multiply
    387,117.20x = 580,749.24 × 134,387.84
  4. Step 4: Simplify right side
    387,117.20x = 78,045,635,945.24
  5. Step 5: Solve for x
    x = 78,045,635,945.24/387,117.20
  6. Step 6: Final answer
    x = 201,607.25

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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.