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Finding the Fourth Proportional to 207,898.52, 286,973.69 and 123,015.38

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Solution

The fourth proportional to 207,898.52, 286,973.69 and 123,015.38 is: 169,804.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,898.52 : 286,973.69 = 123,015.38 : x
  2. Step 2: Convert to fraction form
    207,898.52/286,973.69 = 123,015.38/x
  3. Step 3: Cross multiply
    207,898.52x = 286,973.69 × 123,015.38
  4. Step 4: Simplify right side
    207,898.52x = 35,302,175,475.41
  5. Step 5: Solve for x
    x = 35,302,175,475.41/207,898.52
  6. Step 6: Final answer
    x = 169,804.85

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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.