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Finding the Fourth Proportional to 207,294.78, 286,051.11 and 122,395.50

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Solution

The fourth proportional to 207,294.78, 286,051.11 and 122,395.50 is: 168,896.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,294.78 : 286,051.11 = 122,395.50 : x
  2. Step 2: Convert to fraction form
    207,294.78/286,051.11 = 122,395.50/x
  3. Step 3: Cross multiply
    207,294.78x = 286,051.11 × 122,395.50
  4. Step 4: Simplify right side
    207,294.78x = 35,011,368,634.01
  5. Step 5: Solve for x
    x = 35,011,368,634.01/207,294.78
  6. Step 6: Final answer
    x = 168,896.53

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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.