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Finding the Fourth Proportional to 207,824.80, 312,044.40 and 161,130.40

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Solution

The fourth proportional to 207,824.80, 312,044.40 and 161,130.40 is: 241,933.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,824.80 : 312,044.40 = 161,130.40 : x
  2. Step 2: Convert to fraction form
    207,824.80/312,044.40 = 161,130.40/x
  3. Step 3: Cross multiply
    207,824.80x = 312,044.40 × 161,130.40
  4. Step 4: Simplify right side
    207,824.80x = 50,279,838,989.76
  5. Step 5: Solve for x
    x = 50,279,838,989.76/207,824.80
  6. Step 6: Final answer
    x = 241,933.78

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1.5x scale

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.