Home / 426,524.46-640,278.75-216,605.26

Finding the Fourth Proportional to 426,524.46, 640,278.75 and 216,605.26

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Solution

The fourth proportional to 426,524.46, 640,278.75 and 216,605.26 is: 325,157.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,524.46 : 640,278.75 = 216,605.26 : x
  2. Step 2: Convert to fraction form
    426,524.46/640,278.75 = 216,605.26/x
  3. Step 3: Cross multiply
    426,524.46x = 640,278.75 × 216,605.26
  4. Step 4: Simplify right side
    426,524.46x = 138,687,745,116.23
  5. Step 5: Solve for x
    x = 138,687,745,116.23/426,524.46
  6. Step 6: Final answer
    x = 325,157.78

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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.