Home / 642,131.73-886,132.85-370,200.15

Finding the Fourth Proportional to 642,131.73, 886,132.85 and 370,200.15

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Solution

The fourth proportional to 642,131.73, 886,132.85 and 370,200.15 is: 510,871.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,131.73 : 886,132.85 = 370,200.15 : x
  2. Step 2: Convert to fraction form
    642,131.73/886,132.85 = 370,200.15/x
  3. Step 3: Cross multiply
    642,131.73x = 886,132.85 × 370,200.15
  4. Step 4: Simplify right side
    642,131.73x = 328,046,512,138.93
  5. Step 5: Solve for x
    x = 328,046,512,138.93/642,131.73
  6. Step 6: Final answer
    x = 510,871.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.