Home / 268,491.13-402,723.92-78,943.84

Finding the Fourth Proportional to 268,491.13, 402,723.92 and 78,943.84

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Solution

The fourth proportional to 268,491.13, 402,723.92 and 78,943.84 is: 118,412.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,491.13 : 402,723.92 = 78,943.84 : x
  2. Step 2: Convert to fraction form
    268,491.13/402,723.92 = 78,943.84/x
  3. Step 3: Cross multiply
    268,491.13x = 402,723.92 × 78,943.84
  4. Step 4: Simplify right side
    268,491.13x = 31,792,571,895.20
  5. Step 5: Solve for x
    x = 31,792,571,895.20/268,491.13
  6. Step 6: Final answer
    x = 118,412.00

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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.