Home / 258,790.95-387,955.56-100,982.70

Finding the Fourth Proportional to 258,790.95, 387,955.56 and 100,982.70

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Solution

The fourth proportional to 258,790.95, 387,955.56 and 100,982.70 is: 151,383.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,790.95 : 387,955.56 = 100,982.70 : x
  2. Step 2: Convert to fraction form
    258,790.95/387,955.56 = 100,982.70/x
  3. Step 3: Cross multiply
    258,790.95x = 387,955.56 × 100,982.70
  4. Step 4: Simplify right side
    258,790.95x = 39,176,799,928.81
  5. Step 5: Solve for x
    x = 39,176,799,928.81/258,790.95
  6. Step 6: Final answer
    x = 151,383.96

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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.