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Finding the Fourth Proportional to 209,129.88, 313,694.16 and 59,370.30

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Solution

The fourth proportional to 209,129.88, 313,694.16 and 59,370.30 is: 89,055.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,129.88 : 313,694.16 = 59,370.30 : x
  2. Step 2: Convert to fraction form
    209,129.88/313,694.16 = 59,370.30/x
  3. Step 3: Cross multiply
    209,129.88x = 313,694.16 × 59,370.30
  4. Step 4: Simplify right side
    209,129.88x = 18,624,116,387.45
  5. Step 5: Solve for x
    x = 18,624,116,387.45/209,129.88
  6. Step 6: Final answer
    x = 89,055.26

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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.