Home / 861,139.86-1,291,775.40-262,152.24

Finding the Fourth Proportional to 861,139.86, 1,291,775.40 and 262,152.24

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Solution

The fourth proportional to 861,139.86, 1,291,775.40 and 262,152.24 is: 393,248.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,139.86 : 1,291,775.40 = 262,152.24 : x
  2. Step 2: Convert to fraction form
    861,139.86/1,291,775.40 = 262,152.24/x
  3. Step 3: Cross multiply
    861,139.86x = 1,291,775.40 × 262,152.24
  4. Step 4: Simplify right side
    861,139.86x = 338,641,814,686.90
  5. Step 5: Solve for x
    x = 338,641,814,686.90/861,139.86
  6. Step 6: Final answer
    x = 393,248.33

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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.