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Finding the Fourth Proportional to 256,220.80, 384,331.20 and 237,558.40

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Solution

The fourth proportional to 256,220.80, 384,331.20 and 237,558.40 is: 356,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,220.80 : 384,331.20 = 237,558.40 : x
  2. Step 2: Convert to fraction form
    256,220.80/384,331.20 = 237,558.40/x
  3. Step 3: Cross multiply
    256,220.80x = 384,331.20 × 237,558.40
  4. Step 4: Simplify right side
    256,220.80x = 91,301,104,942.08
  5. Step 5: Solve for x
    x = 91,301,104,942.08/256,220.80
  6. Step 6: Final answer
    x = 356,337.60

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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.