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Finding the Fourth Proportional to 256,426.80, 384,711.30 and 106,737.60

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Solution

The fourth proportional to 256,426.80, 384,711.30 and 106,737.60 is: 160,136.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,426.80 : 384,711.30 = 106,737.60 : x
  2. Step 2: Convert to fraction form
    256,426.80/384,711.30 = 106,737.60/x
  3. Step 3: Cross multiply
    256,426.80x = 384,711.30 × 106,737.60
  4. Step 4: Simplify right side
    256,426.80x = 41,063,160,854.88
  5. Step 5: Solve for x
    x = 41,063,160,854.88/256,426.80
  6. Step 6: Final answer
    x = 160,136.00

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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.