Home / 398,023.76-549,095.10-268,920.56

Finding the Fourth Proportional to 398,023.76, 549,095.10 and 268,920.56

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Solution

The fourth proportional to 398,023.76, 549,095.10 and 268,920.56 is: 370,990.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,023.76 : 549,095.10 = 268,920.56 : x
  2. Step 2: Convert to fraction form
    398,023.76/549,095.10 = 268,920.56/x
  3. Step 3: Cross multiply
    398,023.76x = 549,095.10 × 268,920.56
  4. Step 4: Simplify right side
    398,023.76x = 147,662,961,785.26
  5. Step 5: Solve for x
    x = 147,662,961,785.26/398,023.76
  6. Step 6: Final answer
    x = 370,990.32

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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.