Home / 409,555.11-565,188.68-228,278.55

Finding the Fourth Proportional to 409,555.11, 565,188.68 and 228,278.55

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Solution

The fourth proportional to 409,555.11, 565,188.68 and 228,278.55 is: 315,025.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,555.11 : 565,188.68 = 228,278.55 : x
  2. Step 2: Convert to fraction form
    409,555.11/565,188.68 = 228,278.55/x
  3. Step 3: Cross multiply
    409,555.11x = 565,188.68 × 228,278.55
  4. Step 4: Simplify right side
    409,555.11x = 129,020,455,036.97
  5. Step 5: Solve for x
    x = 129,020,455,036.97/409,555.11
  6. Step 6: Final answer
    x = 315,025.87

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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.