Home / 260,565.85-390,585.65-125,431.45

Finding the Fourth Proportional to 260,565.85, 390,585.65 and 125,431.45

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Solution

The fourth proportional to 260,565.85, 390,585.65 and 125,431.45 is: 188,020.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,565.85 : 390,585.65 = 125,431.45 : x
  2. Step 2: Convert to fraction form
    260,565.85/390,585.65 = 125,431.45/x
  3. Step 3: Cross multiply
    260,565.85x = 390,585.65 × 125,431.45
  4. Step 4: Simplify right side
    260,565.85x = 48,991,723,801.54
  5. Step 5: Solve for x
    x = 48,991,723,801.54/260,565.85
  6. Step 6: Final answer
    x = 188,020.51

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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.