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Finding the Fourth Proportional to 438,351.40, 657,332.70 and 201,766.60

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Solution

The fourth proportional to 438,351.40, 657,332.70 and 201,766.60 is: 302,560.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,351.40 : 657,332.70 = 201,766.60 : x
  2. Step 2: Convert to fraction form
    438,351.40/657,332.70 = 201,766.60/x
  3. Step 3: Cross multiply
    438,351.40x = 657,332.70 × 201,766.60
  4. Step 4: Simplify right side
    438,351.40x = 132,627,783,947.82
  5. Step 5: Solve for x
    x = 132,627,783,947.82/438,351.40
  6. Step 6: Final answer
    x = 302,560.42

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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.