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Finding the Fourth Proportional to 268,448, 402,674.44 and 81,459.50

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Solution

The fourth proportional to 268,448, 402,674.44 and 81,459.50 is: 122,189.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,448 : 402,674.44 = 81,459.50 : x
  2. Step 2: Convert to fraction form
    268,448/402,674.44 = 81,459.50/x
  3. Step 3: Cross multiply
    268,448x = 402,674.44 × 81,459.50
  4. Step 4: Simplify right side
    268,448x = 32,801,658,545.18
  5. Step 5: Solve for x
    x = 32,801,658,545.18/268,448
  6. Step 6: Final answer
    x = 122,189.99

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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.