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Finding the Fourth Proportional to 398,170.71, 549,595.62 and 270,920.12

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Solution

The fourth proportional to 398,170.71, 549,595.62 and 270,920.12 is: 373,951.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,170.71 : 549,595.62 = 270,920.12 : x
  2. Step 2: Convert to fraction form
    398,170.71/549,595.62 = 270,920.12/x
  3. Step 3: Cross multiply
    398,170.71x = 549,595.62 × 270,920.12
  4. Step 4: Simplify right side
    398,170.71x = 148,896,508,573.90
  5. Step 5: Solve for x
    x = 148,896,508,573.90/398,170.71
  6. Step 6: Final answer
    x = 373,951.44

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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.