Home / 394,220.80-591,331.20-144,870.40

Finding the Fourth Proportional to 394,220.80, 591,331.20 and 144,870.40

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Solution

The fourth proportional to 394,220.80, 591,331.20 and 144,870.40 is: 217,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,220.80 : 591,331.20 = 144,870.40 : x
  2. Step 2: Convert to fraction form
    394,220.80/591,331.20 = 144,870.40/x
  3. Step 3: Cross multiply
    394,220.80x = 591,331.20 × 144,870.40
  4. Step 4: Simplify right side
    394,220.80x = 85,666,387,476.48
  5. Step 5: Solve for x
    x = 85,666,387,476.48/394,220.80
  6. Step 6: Final answer
    x = 217,305.60

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1.5x scale

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.