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Finding the Fourth Proportional to 387,077.44, 580,493.28 and 124,360

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Solution

The fourth proportional to 387,077.44, 580,493.28 and 124,360 is: 186,500.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,077.44 : 580,493.28 = 124,360 : x
  2. Step 2: Convert to fraction form
    387,077.44/580,493.28 = 124,360/x
  3. Step 3: Cross multiply
    387,077.44x = 580,493.28 × 124,360
  4. Step 4: Simplify right side
    387,077.44x = 72,190,144,300.80
  5. Step 5: Solve for x
    x = 72,190,144,300.80/387,077.44
  6. Step 6: Final answer
    x = 186,500.52

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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.