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Finding the Fourth Proportional to 256,269.60, 384,404.40 and 231,386.40

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Solution

The fourth proportional to 256,269.60, 384,404.40 and 231,386.40 is: 347,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,269.60 : 384,404.40 = 231,386.40 : x
  2. Step 2: Convert to fraction form
    256,269.60/384,404.40 = 231,386.40/x
  3. Step 3: Cross multiply
    256,269.60x = 384,404.40 × 231,386.40
  4. Step 4: Simplify right side
    256,269.60x = 88,945,950,260.16
  5. Step 5: Solve for x
    x = 88,945,950,260.16/256,269.60
  6. Step 6: Final answer
    x = 347,079.60

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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.