Home / 259,304.40-388,908.60-72,277.20

Finding the Fourth Proportional to 259,304.40, 388,908.60 and 72,277.20

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Solution

The fourth proportional to 259,304.40, 388,908.60 and 72,277.20 is: 108,402.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,304.40 : 388,908.60 = 72,277.20 : x
  2. Step 2: Convert to fraction form
    259,304.40/388,908.60 = 72,277.20/x
  3. Step 3: Cross multiply
    259,304.40x = 388,908.60 × 72,277.20
  4. Step 4: Simplify right side
    259,304.40x = 28,109,224,663.92
  5. Step 5: Solve for x
    x = 28,109,224,663.92/259,304.40
  6. Step 6: Final answer
    x = 108,402.42

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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.