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Finding the Fourth Proportional to 288,044.70, 431,289.45 and 225,836.70

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Solution

The fourth proportional to 288,044.70, 431,289.45 and 225,836.70 is: 338,145.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,044.70 : 431,289.45 = 225,836.70 : x
  2. Step 2: Convert to fraction form
    288,044.70/431,289.45 = 225,836.70/x
  3. Step 3: Cross multiply
    288,044.70x = 431,289.45 × 225,836.70
  4. Step 4: Simplify right side
    288,044.70x = 97,400,986,132.82
  5. Step 5: Solve for x
    x = 97,400,986,132.82/288,044.70
  6. Step 6: Final answer
    x = 338,145.39

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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.