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Finding the Fourth Proportional to 272,437.67, 408,656.51 and 85,463.75

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Solution

The fourth proportional to 272,437.67, 408,656.51 and 85,463.75 is: 128,195.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,437.67 : 408,656.51 = 85,463.75 : x
  2. Step 2: Convert to fraction form
    272,437.67/408,656.51 = 85,463.75/x
  3. Step 3: Cross multiply
    272,437.67x = 408,656.51 × 85,463.75
  4. Step 4: Simplify right side
    272,437.67x = 34,925,317,806.51
  5. Step 5: Solve for x
    x = 34,925,317,806.51/272,437.67
  6. Step 6: Final answer
    x = 128,195.63

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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.