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Finding the Fourth Proportional to 521,494.74, 782,399.61 and 218,036.34

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Solution

The fourth proportional to 521,494.74, 782,399.61 and 218,036.34 is: 327,120.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,494.74 : 782,399.61 = 218,036.34 : x
  2. Step 2: Convert to fraction form
    521,494.74/782,399.61 = 218,036.34/x
  3. Step 3: Cross multiply
    521,494.74x = 782,399.61 × 218,036.34
  4. Step 4: Simplify right side
    521,494.74x = 170,591,547,381.83
  5. Step 5: Solve for x
    x = 170,591,547,381.83/521,494.74
  6. Step 6: Final answer
    x = 327,120.36

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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.