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Finding the Fourth Proportional to 259,059.60, 387,811.80 and 153,824.40

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Solution

The fourth proportional to 259,059.60, 387,811.80 and 153,824.40 is: 230,274.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,059.60 : 387,811.80 = 153,824.40 : x
  2. Step 2: Convert to fraction form
    259,059.60/387,811.80 = 153,824.40/x
  3. Step 3: Cross multiply
    259,059.60x = 387,811.80 × 153,824.40
  4. Step 4: Simplify right side
    259,059.60x = 59,654,917,447.92
  5. Step 5: Solve for x
    x = 59,654,917,447.92/259,059.60
  6. Step 6: Final answer
    x = 230,274.88

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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.