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Finding the Fourth Proportional to 272,331, 375,816.78 and 153,099

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Solution

The fourth proportional to 272,331, 375,816.78 and 153,099 is: 211,276.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,331 : 375,816.78 = 153,099 : x
  2. Step 2: Convert to fraction form
    272,331/375,816.78 = 153,099/x
  3. Step 3: Cross multiply
    272,331x = 375,816.78 × 153,099
  4. Step 4: Simplify right side
    272,331x = 57,537,173,201.22
  5. Step 5: Solve for x
    x = 57,537,173,201.22/272,331
  6. Step 6: Final answer
    x = 211,276.62

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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.