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Finding the Fourth Proportional to 272,979.60, 409,469.40 and 243,455.10

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Solution

The fourth proportional to 272,979.60, 409,469.40 and 243,455.10 is: 365,182.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,979.60 : 409,469.40 = 243,455.10 : x
  2. Step 2: Convert to fraction form
    272,979.60/409,469.40 = 243,455.10/x
  3. Step 3: Cross multiply
    272,979.60x = 409,469.40 × 243,455.10
  4. Step 4: Simplify right side
    272,979.60x = 99,687,413,723.94
  5. Step 5: Solve for x
    x = 99,687,413,723.94/272,979.60
  6. Step 6: Final answer
    x = 365,182.65

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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.