Home / 258,831.88-388,341.23-90,377.02

Finding the Fourth Proportional to 258,831.88, 388,341.23 and 90,377.02

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Solution

The fourth proportional to 258,831.88, 388,341.23 and 90,377.02 is: 135,598.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,831.88 : 388,341.23 = 90,377.02 : x
  2. Step 2: Convert to fraction form
    258,831.88/388,341.23 = 90,377.02/x
  3. Step 3: Cross multiply
    258,831.88x = 388,341.23 × 90,377.02
  4. Step 4: Simplify right side
    258,831.88x = 35,097,123,110.53
  5. Step 5: Solve for x
    x = 35,097,123,110.53/258,831.88
  6. Step 6: Final answer
    x = 135,598.15

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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.