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Finding the Fourth Proportional to 398,069.04, 549,342.18 and 225,982.56

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Solution

The fourth proportional to 398,069.04, 549,342.18 and 225,982.56 is: 311,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,069.04 : 549,342.18 = 225,982.56 : x
  2. Step 2: Convert to fraction form
    398,069.04/549,342.18 = 225,982.56/x
  3. Step 3: Cross multiply
    398,069.04x = 549,342.18 × 225,982.56
  4. Step 4: Simplify right side
    398,069.04x = 124,141,752,152.38
  5. Step 5: Solve for x
    x = 124,141,752,152.38/398,069.04
  6. Step 6: Final answer
    x = 311,859.85

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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.