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Finding the Fourth Proportional to 307,764.39, 424,750.89 and 255,990.12

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Solution

The fourth proportional to 307,764.39, 424,750.89 and 255,990.12 is: 353,296.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,764.39 : 424,750.89 = 255,990.12 : x
  2. Step 2: Convert to fraction form
    307,764.39/424,750.89 = 255,990.12/x
  3. Step 3: Cross multiply
    307,764.39x = 424,750.89 × 255,990.12
  4. Step 4: Simplify right side
    307,764.39x = 108,732,031,301.21
  5. Step 5: Solve for x
    x = 108,732,031,301.21/307,764.39
  6. Step 6: Final answer
    x = 353,296.34

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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.