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Finding the Fourth Proportional to 209,343.87, 288,891.36 and 113,848.38

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Solution

The fourth proportional to 209,343.87, 288,891.36 and 113,848.38 is: 157,109.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,343.87 : 288,891.36 = 113,848.38 : x
  2. Step 2: Convert to fraction form
    209,343.87/288,891.36 = 113,848.38/x
  3. Step 3: Cross multiply
    209,343.87x = 288,891.36 × 113,848.38
  4. Step 4: Simplify right side
    209,343.87x = 32,889,813,332.00
  5. Step 5: Solve for x
    x = 32,889,813,332.00/209,343.87
  6. Step 6: Final answer
    x = 157,109.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.