Home / 398,023.20-548,851.08-307,393.92

Finding the Fourth Proportional to 398,023.20, 548,851.08 and 307,393.92

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Solution

The fourth proportional to 398,023.20, 548,851.08 and 307,393.92 is: 423,878.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,023.20 : 548,851.08 = 307,393.92 : x
  2. Step 2: Convert to fraction form
    398,023.20/548,851.08 = 307,393.92/x
  3. Step 3: Cross multiply
    398,023.20x = 548,851.08 × 307,393.92
  4. Step 4: Simplify right side
    398,023.20x = 168,713,484,977.43
  5. Step 5: Solve for x
    x = 168,713,484,977.43/398,023.20
  6. Step 6: Final answer
    x = 423,878.52

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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.