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Finding the Fourth Proportional to 352,316.75, 528,470.51 and 86,079.57

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Solution

The fourth proportional to 352,316.75, 528,470.51 and 86,079.57 is: 129,118.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,316.75 : 528,470.51 = 86,079.57 : x
  2. Step 2: Convert to fraction form
    352,316.75/528,470.51 = 86,079.57/x
  3. Step 3: Cross multiply
    352,316.75x = 528,470.51 × 86,079.57
  4. Step 4: Simplify right side
    352,316.75x = 45,490,511,616.13
  5. Step 5: Solve for x
    x = 45,490,511,616.13/352,316.75
  6. Step 6: Final answer
    x = 129,118.22

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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.