Home / 257,411.40-386,226.45-124,223.10

Finding the Fourth Proportional to 257,411.40, 386,226.45 and 124,223.10

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Solution

The fourth proportional to 257,411.40, 386,226.45 and 124,223.10 is: 186,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,411.40 : 386,226.45 = 124,223.10 : x
  2. Step 2: Convert to fraction form
    257,411.40/386,226.45 = 124,223.10/x
  3. Step 3: Cross multiply
    257,411.40x = 386,226.45 × 124,223.10
  4. Step 4: Simplify right side
    257,411.40x = 47,978,246,921.00
  5. Step 5: Solve for x
    x = 47,978,246,921.00/257,411.40
  6. Step 6: Final answer
    x = 186,387.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.