Home / 398,031.27-549,138.89-225,849.52

Finding the Fourth Proportional to 398,031.27, 549,138.89 and 225,849.52

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Solution

The fourth proportional to 398,031.27, 549,138.89 and 225,849.52 is: 311,590.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,031.27 : 549,138.89 = 225,849.52 : x
  2. Step 2: Convert to fraction form
    398,031.27/549,138.89 = 225,849.52/x
  3. Step 3: Cross multiply
    398,031.27x = 549,138.89 × 225,849.52
  4. Step 4: Simplify right side
    398,031.27x = 124,022,754,719.83
  5. Step 5: Solve for x
    x = 124,022,754,719.83/398,031.27
  6. Step 6: Final answer
    x = 311,590.48

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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.