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Finding the Fourth Proportional to 268,884.72, 371,053.17 and 154,159.56

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Solution

The fourth proportional to 268,884.72, 371,053.17 and 154,159.56 is: 212,735.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,884.72 : 371,053.17 = 154,159.56 : x
  2. Step 2: Convert to fraction form
    268,884.72/371,053.17 = 154,159.56/x
  3. Step 3: Cross multiply
    268,884.72x = 371,053.17 × 154,159.56
  4. Step 4: Simplify right side
    268,884.72x = 57,201,393,423.81
  5. Step 5: Solve for x
    x = 57,201,393,423.81/268,884.72
  6. Step 6: Final answer
    x = 212,735.75

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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.