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Finding the Fourth Proportional to 508,159.97, 701,255.98 and 278,712.58

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Solution

The fourth proportional to 508,159.97, 701,255.98 and 278,712.58 is: 384,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,159.97 : 701,255.98 = 278,712.58 : x
  2. Step 2: Convert to fraction form
    508,159.97/701,255.98 = 278,712.58/x
  3. Step 3: Cross multiply
    508,159.97x = 701,255.98 × 278,712.58
  4. Step 4: Simplify right side
    508,159.97x = 195,448,863,426.23
  5. Step 5: Solve for x
    x = 195,448,863,426.23/508,159.97
  6. Step 6: Final answer
    x = 384,620.74

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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.