Home / 288,350.04-431,945.10-143,820.12

Finding the Fourth Proportional to 288,350.04, 431,945.10 and 143,820.12

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Solution

The fourth proportional to 288,350.04, 431,945.10 and 143,820.12 is: 215,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,350.04 : 431,945.10 = 143,820.12 : x
  2. Step 2: Convert to fraction form
    288,350.04/431,945.10 = 143,820.12/x
  3. Step 3: Cross multiply
    288,350.04x = 431,945.10 × 143,820.12
  4. Step 4: Simplify right side
    288,350.04x = 62,122,396,115.41
  5. Step 5: Solve for x
    x = 62,122,396,115.41/288,350.04
  6. Step 6: Final answer
    x = 215,440.91

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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.