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Finding the Fourth Proportional to 209,700.56, 314,600.52 and 91,393.04

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Solution

The fourth proportional to 209,700.56, 314,600.52 and 91,393.04 is: 137,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,700.56 : 314,600.52 = 91,393.04 : x
  2. Step 2: Convert to fraction form
    209,700.56/314,600.52 = 91,393.04/x
  3. Step 3: Cross multiply
    209,700.56x = 314,600.52 × 91,393.04
  4. Step 4: Simplify right side
    209,700.56x = 28,752,297,908.38
  5. Step 5: Solve for x
    x = 28,752,297,908.38/209,700.56
  6. Step 6: Final answer
    x = 137,111.21

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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.