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Finding the Fourth Proportional to 268,859.70, 402,803.55 and 156,447.90

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Solution

The fourth proportional to 268,859.70, 402,803.55 and 156,447.90 is: 234,389.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,859.70 : 402,803.55 = 156,447.90 : x
  2. Step 2: Convert to fraction form
    268,859.70/402,803.55 = 156,447.90/x
  3. Step 3: Cross multiply
    268,859.70x = 402,803.55 × 156,447.90
  4. Step 4: Simplify right side
    268,859.70x = 63,017,769,510.05
  5. Step 5: Solve for x
    x = 63,017,769,510.05/268,859.70
  6. Step 6: Final answer
    x = 234,389.05

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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.