Home / 258,812.02-388,215.78-71,823.52

Finding the Fourth Proportional to 258,812.02, 388,215.78 and 71,823.52

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Solution

The fourth proportional to 258,812.02, 388,215.78 and 71,823.52 is: 107,734.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,812.02 : 388,215.78 = 71,823.52 : x
  2. Step 2: Convert to fraction form
    258,812.02/388,215.78 = 71,823.52/x
  3. Step 3: Cross multiply
    258,812.02x = 388,215.78 × 71,823.52
  4. Step 4: Simplify right side
    258,812.02x = 27,883,023,839.15
  5. Step 5: Solve for x
    x = 27,883,023,839.15/258,812.02
  6. Step 6: Final answer
    x = 107,734.66

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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.