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Finding the Fourth Proportional to 201,502.67, 278,113.41 and 115,519.37

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Solution

The fourth proportional to 201,502.67, 278,113.41 and 115,519.37 is: 159,439.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,502.67 : 278,113.41 = 115,519.37 : x
  2. Step 2: Convert to fraction form
    201,502.67/278,113.41 = 115,519.37/x
  3. Step 3: Cross multiply
    201,502.67x = 278,113.41 × 115,519.37
  4. Step 4: Simplify right side
    201,502.67x = 32,127,484,521.18
  5. Step 5: Solve for x
    x = 32,127,484,521.18/201,502.67
  6. Step 6: Final answer
    x = 159,439.50

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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.