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Finding the Fourth Proportional to 655,621.80, 983,432.70 and 256,275.60

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Solution

The fourth proportional to 655,621.80, 983,432.70 and 256,275.60 is: 384,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,621.80 : 983,432.70 = 256,275.60 : x
  2. Step 2: Convert to fraction form
    655,621.80/983,432.70 = 256,275.60/x
  3. Step 3: Cross multiply
    655,621.80x = 983,432.70 × 256,275.60
  4. Step 4: Simplify right side
    655,621.80x = 252,029,805,252.12
  5. Step 5: Solve for x
    x = 252,029,805,252.12/655,621.80
  6. Step 6: Final answer
    x = 384,413.40

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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.