Home / 252,445.35-378,402.20-83,920.45

Finding the Fourth Proportional to 252,445.35, 378,402.20 and 83,920.45

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Solution

The fourth proportional to 252,445.35, 378,402.20 and 83,920.45 is: 125,792.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,445.35 : 378,402.20 = 83,920.45 : x
  2. Step 2: Convert to fraction form
    252,445.35/378,402.20 = 83,920.45/x
  3. Step 3: Cross multiply
    252,445.35x = 378,402.20 × 83,920.45
  4. Step 4: Simplify right side
    252,445.35x = 31,755,682,904.99
  5. Step 5: Solve for x
    x = 31,755,682,904.99/252,445.35
  6. Step 6: Final answer
    x = 125,792.31

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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.