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Finding the Fourth Proportional to 259,025.60, 388,538.40 and 153,790.40

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Solution

The fourth proportional to 259,025.60, 388,538.40 and 153,790.40 is: 230,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,025.60 : 388,538.40 = 153,790.40 : x
  2. Step 2: Convert to fraction form
    259,025.60/388,538.40 = 153,790.40/x
  3. Step 3: Cross multiply
    259,025.60x = 388,538.40 × 153,790.40
  4. Step 4: Simplify right side
    259,025.60x = 59,753,475,951.36
  5. Step 5: Solve for x
    x = 59,753,475,951.36/259,025.60
  6. Step 6: Final answer
    x = 230,685.60

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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.