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Finding the Fourth Proportional to 398,160.98, 549,582.21 and 270,910.38

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Solution

The fourth proportional to 398,160.98, 549,582.21 and 270,910.38 is: 373,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,160.98 : 549,582.21 = 270,910.38 : x
  2. Step 2: Convert to fraction form
    398,160.98/549,582.21 = 270,910.38/x
  3. Step 3: Cross multiply
    398,160.98x = 549,582.21 × 270,910.38
  4. Step 4: Simplify right side
    398,160.98x = 148,887,525,690.98
  5. Step 5: Solve for x
    x = 148,887,525,690.98/398,160.98
  6. Step 6: Final answer
    x = 373,938.02

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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.