Home / 260,002.57-390,062.19-86,907.31

Finding the Fourth Proportional to 260,002.57, 390,062.19 and 86,907.31

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Solution

The fourth proportional to 260,002.57, 390,062.19 and 86,907.31 is: 130,380.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,002.57 : 390,062.19 = 86,907.31 : x
  2. Step 2: Convert to fraction form
    260,002.57/390,062.19 = 86,907.31/x
  3. Step 3: Cross multiply
    260,002.57x = 390,062.19 × 86,907.31
  4. Step 4: Simplify right side
    260,002.57x = 33,899,255,665.61
  5. Step 5: Solve for x
    x = 33,899,255,665.61/260,002.57
  6. Step 6: Final answer
    x = 130,380.46

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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.