Home / 261,629.60-392,444.40-259,661.30

Finding the Fourth Proportional to 261,629.60, 392,444.40 and 259,661.30

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Solution

The fourth proportional to 261,629.60, 392,444.40 and 259,661.30 is: 389,491.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,629.60 : 392,444.40 = 259,661.30 : x
  2. Step 2: Convert to fraction form
    261,629.60/392,444.40 = 259,661.30/x
  3. Step 3: Cross multiply
    261,629.60x = 392,444.40 × 259,661.30
  4. Step 4: Simplify right side
    261,629.60x = 101,902,623,081.72
  5. Step 5: Solve for x
    x = 101,902,623,081.72/261,629.60
  6. Step 6: Final answer
    x = 389,491.95

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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.