Home / 398,680.16-549,731.68-325,857.11

Finding the Fourth Proportional to 398,680.16, 549,731.68 and 325,857.11

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Solution

The fourth proportional to 398,680.16, 549,731.68 and 325,857.11 is: 449,317.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,680.16 : 549,731.68 = 325,857.11 : x
  2. Step 2: Convert to fraction form
    398,680.16/549,731.68 = 325,857.11/x
  3. Step 3: Cross multiply
    398,680.16x = 549,731.68 × 325,857.11
  4. Step 4: Simplify right side
    398,680.16x = 179,133,972,956.94
  5. Step 5: Solve for x
    x = 179,133,972,956.94/398,680.16
  6. Step 6: Final answer
    x = 449,317.51

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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.