Home / 310,531.70-428,409.33-195,772.58

Finding the Fourth Proportional to 310,531.70, 428,409.33 and 195,772.58

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Solution

The fourth proportional to 310,531.70, 428,409.33 and 195,772.58 is: 270,087.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,531.70 : 428,409.33 = 195,772.58 : x
  2. Step 2: Convert to fraction form
    310,531.70/428,409.33 = 195,772.58/x
  3. Step 3: Cross multiply
    310,531.70x = 428,409.33 × 195,772.58
  4. Step 4: Simplify right side
    310,531.70x = 83,870,799,830.17
  5. Step 5: Solve for x
    x = 83,870,799,830.17/310,531.70
  6. Step 6: Final answer
    x = 270,087.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.