Home / 438,721.20-657,644.40-201,650.40

Finding the Fourth Proportional to 438,721.20, 657,644.40 and 201,650.40

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Solution

The fourth proportional to 438,721.20, 657,644.40 and 201,650.40 is: 302,274.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,721.20 : 657,644.40 = 201,650.40 : x
  2. Step 2: Convert to fraction form
    438,721.20/657,644.40 = 201,650.40/x
  3. Step 3: Cross multiply
    438,721.20x = 657,644.40 × 201,650.40
  4. Step 4: Simplify right side
    438,721.20x = 132,614,256,317.76
  5. Step 5: Solve for x
    x = 132,614,256,317.76/438,721.20
  6. Step 6: Final answer
    x = 302,274.56

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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.