Home / 390,723.10-539,200.48-227,476.92

Finding the Fourth Proportional to 390,723.10, 539,200.48 and 227,476.92

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Solution

The fourth proportional to 390,723.10, 539,200.48 and 227,476.92 is: 313,919.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,723.10 : 539,200.48 = 227,476.92 : x
  2. Step 2: Convert to fraction form
    390,723.10/539,200.48 = 227,476.92/x
  3. Step 3: Cross multiply
    390,723.10x = 539,200.48 × 227,476.92
  4. Step 4: Simplify right side
    390,723.10x = 122,655,664,452.92
  5. Step 5: Solve for x
    x = 122,655,664,452.92/390,723.10
  6. Step 6: Final answer
    x = 313,919.66

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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.