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Finding the Fourth Proportional to 268,403.40, 402,605.10 and 179,929.80

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Solution

The fourth proportional to 268,403.40, 402,605.10 and 179,929.80 is: 269,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,403.40 : 402,605.10 = 179,929.80 : x
  2. Step 2: Convert to fraction form
    268,403.40/402,605.10 = 179,929.80/x
  3. Step 3: Cross multiply
    268,403.40x = 402,605.10 × 179,929.80
  4. Step 4: Simplify right side
    268,403.40x = 72,440,655,121.98
  5. Step 5: Solve for x
    x = 72,440,655,121.98/268,403.40
  6. Step 6: Final answer
    x = 269,894.70

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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.