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Finding the Fourth Proportional to 398,306.76, 549,040.86 and 270,760.92

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Solution

The fourth proportional to 398,306.76, 549,040.86 and 270,760.92 is: 373,226.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,306.76 : 549,040.86 = 270,760.92 : x
  2. Step 2: Convert to fraction form
    398,306.76/549,040.86 = 270,760.92/x
  3. Step 3: Cross multiply
    398,306.76x = 549,040.86 × 270,760.92
  4. Step 4: Simplify right side
    398,306.76x = 148,658,808,371.19
  5. Step 5: Solve for x
    x = 148,658,808,371.19/398,306.76
  6. Step 6: Final answer
    x = 373,226.93

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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.