Home / 438,423.20-657,634.80-157,839.20

Finding the Fourth Proportional to 438,423.20, 657,634.80 and 157,839.20

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Solution

The fourth proportional to 438,423.20, 657,634.80 and 157,839.20 is: 236,758.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,423.20 : 657,634.80 = 157,839.20 : x
  2. Step 2: Convert to fraction form
    438,423.20/657,634.80 = 157,839.20/x
  3. Step 3: Cross multiply
    438,423.20x = 657,634.80 × 157,839.20
  4. Step 4: Simplify right side
    438,423.20x = 103,800,550,724.16
  5. Step 5: Solve for x
    x = 103,800,550,724.16/438,423.20
  6. Step 6: Final answer
    x = 236,758.80

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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.