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Finding the Fourth Proportional to 256,000.10, 384,000.15 and 162,611.30

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Solution

The fourth proportional to 256,000.10, 384,000.15 and 162,611.30 is: 243,916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,000.10 : 384,000.15 = 162,611.30 : x
  2. Step 2: Convert to fraction form
    256,000.10/384,000.15 = 162,611.30/x
  3. Step 3: Cross multiply
    256,000.10x = 384,000.15 × 162,611.30
  4. Step 4: Simplify right side
    256,000.10x = 62,442,763,591.70
  5. Step 5: Solve for x
    x = 62,442,763,591.70/256,000.10
  6. Step 6: Final answer
    x = 243,916.95

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1.5x scale

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.