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Finding the Fourth Proportional to 259,307.60, 388,807.80 and 134,891.60

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Solution

The fourth proportional to 259,307.60, 388,807.80 and 134,891.60 is: 202,257.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,307.60 : 388,807.80 = 134,891.60 : x
  2. Step 2: Convert to fraction form
    259,307.60/388,807.80 = 134,891.60/x
  3. Step 3: Cross multiply
    259,307.60x = 388,807.80 × 134,891.60
  4. Step 4: Simplify right side
    259,307.60x = 52,446,906,234.48
  5. Step 5: Solve for x
    x = 52,446,906,234.48/259,307.60
  6. Step 6: Final answer
    x = 202,257.50

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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.