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Finding the Fourth Proportional to 272,778.60, 409,240.80 and 243,399.90

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Solution

The fourth proportional to 272,778.60, 409,240.80 and 243,399.90 is: 365,164.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,778.60 : 409,240.80 = 243,399.90 : x
  2. Step 2: Convert to fraction form
    272,778.60/409,240.80 = 243,399.90/x
  3. Step 3: Cross multiply
    272,778.60x = 409,240.80 × 243,399.90
  4. Step 4: Simplify right side
    272,778.60x = 99,609,169,795.92
  5. Step 5: Solve for x
    x = 99,609,169,795.92/272,778.60
  6. Step 6: Final answer
    x = 365,164.90

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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.