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Finding the Fourth Proportional to 398,341.70, 549,089.07 and 270,795.86

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Solution

The fourth proportional to 398,341.70, 549,089.07 and 270,795.86 is: 373,275.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,341.70 : 549,089.07 = 270,795.86 : x
  2. Step 2: Convert to fraction form
    398,341.70/549,089.07 = 270,795.86/x
  3. Step 3: Cross multiply
    398,341.70x = 549,089.07 × 270,795.86
  4. Step 4: Simplify right side
    398,341.70x = 148,691,046,231.52
  5. Step 5: Solve for x
    x = 148,691,046,231.52/398,341.70
  6. Step 6: Final answer
    x = 373,275.12

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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.