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Finding the Fourth Proportional to 354,352.78, 531,778.24 and 320,473.42

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Solution

The fourth proportional to 354,352.78, 531,778.24 and 320,473.42 is: 480,935.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,352.78 : 531,778.24 = 320,473.42 : x
  2. Step 2: Convert to fraction form
    354,352.78/531,778.24 = 320,473.42/x
  3. Step 3: Cross multiply
    354,352.78x = 531,778.24 × 320,473.42
  4. Step 4: Simplify right side
    354,352.78x = 170,420,791,254.38
  5. Step 5: Solve for x
    x = 170,420,791,254.38/354,352.78
  6. Step 6: Final answer
    x = 480,935.39

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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.