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Finding the Fourth Proportional to 282,052.52, 389,238.56 and 154,728.11

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Solution

The fourth proportional to 282,052.52, 389,238.56 and 154,728.11 is: 213,528.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,052.52 : 389,238.56 = 154,728.11 : x
  2. Step 2: Convert to fraction form
    282,052.52/389,238.56 = 154,728.11/x
  3. Step 3: Cross multiply
    282,052.52x = 389,238.56 × 154,728.11
  4. Step 4: Simplify right side
    282,052.52x = 60,226,144,008.09
  5. Step 5: Solve for x
    x = 60,226,144,008.09/282,052.52
  6. Step 6: Final answer
    x = 213,528.12

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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.