Home / 257,917.12-386,815.20-124,731.52

Finding the Fourth Proportional to 257,917.12, 386,815.20 and 124,731.52

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Solution

The fourth proportional to 257,917.12, 386,815.20 and 124,731.52 is: 187,068.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,917.12 : 386,815.20 = 124,731.52 : x
  2. Step 2: Convert to fraction form
    257,917.12/386,815.20 = 124,731.52/x
  3. Step 3: Cross multiply
    257,917.12x = 386,815.20 × 124,731.52
  4. Step 4: Simplify right side
    257,917.12x = 48,248,047,855.10
  5. Step 5: Solve for x
    x = 48,248,047,855.10/257,917.12
  6. Step 6: Final answer
    x = 187,068.03

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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.