Home / 439,727.10-660,028.05-215,340.90

Finding the Fourth Proportional to 439,727.10, 660,028.05 and 215,340.90

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Solution

The fourth proportional to 439,727.10, 660,028.05 and 215,340.90 is: 323,225.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,727.10 : 660,028.05 = 215,340.90 : x
  2. Step 2: Convert to fraction form
    439,727.10/660,028.05 = 215,340.90/x
  3. Step 3: Cross multiply
    439,727.10x = 660,028.05 × 215,340.90
  4. Step 4: Simplify right side
    439,727.10x = 142,131,034,312.25
  5. Step 5: Solve for x
    x = 142,131,034,312.25/439,727.10
  6. Step 6: Final answer
    x = 323,225.55

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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.