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Finding the Fourth Proportional to 508,818.90, 763,249.10 and 129,749.46

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Solution

The fourth proportional to 508,818.90, 763,249.10 and 129,749.46 is: 194,629.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,818.90 : 763,249.10 = 129,749.46 : x
  2. Step 2: Convert to fraction form
    508,818.90/763,249.10 = 129,749.46/x
  3. Step 3: Cross multiply
    508,818.90x = 763,249.10 × 129,749.46
  4. Step 4: Simplify right side
    508,818.90x = 99,031,157,921.74
  5. Step 5: Solve for x
    x = 99,031,157,921.74/508,818.90
  6. Step 6: Final answer
    x = 194,629.48

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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.