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Finding the Fourth Proportional to 400,309.04, 552,793.80 and 257,318.12

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Solution

The fourth proportional to 400,309.04, 552,793.80 and 257,318.12 is: 355,335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,309.04 : 552,793.80 = 257,318.12 : x
  2. Step 2: Convert to fraction form
    400,309.04/552,793.80 = 257,318.12/x
  3. Step 3: Cross multiply
    400,309.04x = 552,793.80 × 257,318.12
  4. Step 4: Simplify right side
    400,309.04x = 142,243,861,363.66
  5. Step 5: Solve for x
    x = 142,243,861,363.66/400,309.04
  6. Step 6: Final answer
    x = 355,335.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.