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Finding the Fourth Proportional to 316,871.60, 474,987.38 and 198,625.91

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Solution

The fourth proportional to 316,871.60, 474,987.38 and 198,625.91 is: 297,738.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,871.60 : 474,987.38 = 198,625.91 : x
  2. Step 2: Convert to fraction form
    316,871.60/474,987.38 = 198,625.91/x
  3. Step 3: Cross multiply
    316,871.60x = 474,987.38 × 198,625.91
  4. Step 4: Simplify right side
    316,871.60x = 94,344,797,222.95
  5. Step 5: Solve for x
    x = 94,344,797,222.95/316,871.60
  6. Step 6: Final answer
    x = 297,738.26

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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.