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Finding the Fourth Proportional to 256,500.60, 384,750.90 and 155,461.20

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Solution

The fourth proportional to 256,500.60, 384,750.90 and 155,461.20 is: 233,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,500.60 : 384,750.90 = 155,461.20 : x
  2. Step 2: Convert to fraction form
    256,500.60/384,750.90 = 155,461.20/x
  3. Step 3: Cross multiply
    256,500.60x = 384,750.90 × 155,461.20
  4. Step 4: Simplify right side
    256,500.60x = 59,813,836,615.08
  5. Step 5: Solve for x
    x = 59,813,836,615.08/256,500.60
  6. Step 6: Final answer
    x = 233,191.80

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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.