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Finding the Fourth Proportional to 518,139.77, 777,237.39 and 163,181.43

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Solution

The fourth proportional to 518,139.77, 777,237.39 and 163,181.43 is: 244,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,139.77 : 777,237.39 = 163,181.43 : x
  2. Step 2: Convert to fraction form
    518,139.77/777,237.39 = 163,181.43/x
  3. Step 3: Cross multiply
    518,139.77x = 777,237.39 × 163,181.43
  4. Step 4: Simplify right side
    518,139.77x = 126,830,708,749.67
  5. Step 5: Solve for x
    x = 126,830,708,749.67/518,139.77
  6. Step 6: Final answer
    x = 244,780.88

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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.