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Finding the Fourth Proportional to 515,560.65, 773,156.44 and 178,510.84

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Solution

The fourth proportional to 515,560.65, 773,156.44 and 178,510.84 is: 267,702.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,560.65 : 773,156.44 = 178,510.84 : x
  2. Step 2: Convert to fraction form
    515,560.65/773,156.44 = 178,510.84/x
  3. Step 3: Cross multiply
    515,560.65x = 773,156.44 × 178,510.84
  4. Step 4: Simplify right side
    515,560.65x = 138,016,803,846.06
  5. Step 5: Solve for x
    x = 138,016,803,846.06/515,560.65
  6. Step 6: Final answer
    x = 267,702.36

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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.