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Finding the Fourth Proportional to 382,275.62, 573,055.31 and 129,379.06

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Solution

The fourth proportional to 382,275.62, 573,055.31 and 129,379.06 is: 193,947.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,275.62 : 573,055.31 = 129,379.06 : x
  2. Step 2: Convert to fraction form
    382,275.62/573,055.31 = 129,379.06/x
  3. Step 3: Cross multiply
    382,275.62x = 573,055.31 × 129,379.06
  4. Step 4: Simplify right side
    382,275.62x = 74,141,357,335.81
  5. Step 5: Solve for x
    x = 74,141,357,335.81/382,275.62
  6. Step 6: Final answer
    x = 193,947.39

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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.