Home / 409,439.13-565,020.21-228,158.70

Finding the Fourth Proportional to 409,439.13, 565,020.21 and 228,158.70

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Solution

The fourth proportional to 409,439.13, 565,020.21 and 228,158.70 is: 314,855.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,439.13 : 565,020.21 = 228,158.70 : x
  2. Step 2: Convert to fraction form
    409,439.13/565,020.21 = 228,158.70/x
  3. Step 3: Cross multiply
    409,439.13x = 565,020.21 × 228,158.70
  4. Step 4: Simplify right side
    409,439.13x = 128,914,276,587.33
  5. Step 5: Solve for x
    x = 128,914,276,587.33/409,439.13
  6. Step 6: Final answer
    x = 314,855.78

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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.