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Finding the Fourth Proportional to 518,742.43, 778,181.68 and 203,158.33

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Solution

The fourth proportional to 518,742.43, 778,181.68 and 203,158.33 is: 304,764.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,742.43 : 778,181.68 = 203,158.33 : x
  2. Step 2: Convert to fraction form
    518,742.43/778,181.68 = 203,158.33/x
  3. Step 3: Cross multiply
    518,742.43x = 778,181.68 × 203,158.33
  4. Step 4: Simplify right side
    518,742.43x = 158,094,088,853.89
  5. Step 5: Solve for x
    x = 158,094,088,853.89/518,742.43
  6. Step 6: Final answer
    x = 304,764.14

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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.