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Finding the Fourth Proportional to 398,004.27, 549,218.12 and 225,925.71

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Solution

The fourth proportional to 398,004.27, 549,218.12 and 225,925.71 is: 311,761.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,004.27 : 549,218.12 = 225,925.71 : x
  2. Step 2: Convert to fraction form
    398,004.27/549,218.12 = 225,925.71/x
  3. Step 3: Cross multiply
    398,004.27x = 549,218.12 × 225,925.71
  4. Step 4: Simplify right side
    398,004.27x = 124,082,492,576.24
  5. Step 5: Solve for x
    x = 124,082,492,576.24/398,004.27
  6. Step 6: Final answer
    x = 311,761.71

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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.