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Finding the Fourth Proportional to 555,156.59, 766,116.44 and 313,439.63

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Solution

The fourth proportional to 555,156.59, 766,116.44 and 313,439.63 is: 432,546.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,156.59 : 766,116.44 = 313,439.63 : x
  2. Step 2: Convert to fraction form
    555,156.59/766,116.44 = 313,439.63/x
  3. Step 3: Cross multiply
    555,156.59x = 766,116.44 × 313,439.63
  4. Step 4: Simplify right side
    555,156.59x = 240,131,248,092.74
  5. Step 5: Solve for x
    x = 240,131,248,092.74/555,156.59
  6. Step 6: Final answer
    x = 432,546.88

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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.