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Finding the Fourth Proportional to 510,069.25, 703,895.62 and 280,621.63

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Solution

The fourth proportional to 510,069.25, 703,895.62 and 280,621.63 is: 387,257.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,069.25 : 703,895.62 = 280,621.63 : x
  2. Step 2: Convert to fraction form
    510,069.25/703,895.62 = 280,621.63/x
  3. Step 3: Cross multiply
    510,069.25x = 703,895.62 × 280,621.63
  4. Step 4: Simplify right side
    510,069.25x = 197,528,332,714.78
  5. Step 5: Solve for x
    x = 197,528,332,714.78/510,069.25
  6. Step 6: Final answer
    x = 387,257.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.