Home / 394,541.15-591,881.43-128,254.76

Finding the Fourth Proportional to 394,541.15, 591,881.43 and 128,254.76

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Solution

The fourth proportional to 394,541.15, 591,881.43 and 128,254.76 is: 192,404.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,541.15 : 591,881.43 = 128,254.76 : x
  2. Step 2: Convert to fraction form
    394,541.15/591,881.43 = 128,254.76/x
  3. Step 3: Cross multiply
    394,541.15x = 591,881.43 × 128,254.76
  4. Step 4: Simplify right side
    394,541.15x = 75,911,609,772.78
  5. Step 5: Solve for x
    x = 75,911,609,772.78/394,541.15
  6. Step 6: Final answer
    x = 192,404.80

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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.