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Finding the Fourth Proportional to 259,276.20, 388,258.20 and 247,466.40

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Solution

The fourth proportional to 259,276.20, 388,258.20 and 247,466.40 is: 370,573.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,276.20 : 388,258.20 = 247,466.40 : x
  2. Step 2: Convert to fraction form
    259,276.20/388,258.20 = 247,466.40/x
  3. Step 3: Cross multiply
    259,276.20x = 388,258.20 × 247,466.40
  4. Step 4: Simplify right side
    259,276.20x = 96,080,859,024.48
  5. Step 5: Solve for x
    x = 96,080,859,024.48/259,276.20
  6. Step 6: Final answer
    x = 370,573.38

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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.