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Finding the Fourth Proportional to 256,913.20, 385,369.80 and 182,117.80

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Solution

The fourth proportional to 256,913.20, 385,369.80 and 182,117.80 is: 273,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,913.20 : 385,369.80 = 182,117.80 : x
  2. Step 2: Convert to fraction form
    256,913.20/385,369.80 = 182,117.80/x
  3. Step 3: Cross multiply
    256,913.20x = 385,369.80 × 182,117.80
  4. Step 4: Simplify right side
    256,913.20x = 70,182,700,162.44
  5. Step 5: Solve for x
    x = 70,182,700,162.44/256,913.20
  6. Step 6: Final answer
    x = 273,176.70

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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.