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Finding the Fourth Proportional to 612,212.36, 918,486.24 and 185,761.94

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Solution

The fourth proportional to 612,212.36, 918,486.24 and 185,761.94 is: 278,693.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,212.36 : 918,486.24 = 185,761.94 : x
  2. Step 2: Convert to fraction form
    612,212.36/918,486.24 = 185,761.94/x
  3. Step 3: Cross multiply
    612,212.36x = 918,486.24 × 185,761.94
  4. Step 4: Simplify right side
    612,212.36x = 170,619,785,805.71
  5. Step 5: Solve for x
    x = 170,619,785,805.71/612,212.36
  6. Step 6: Final answer
    x = 278,693.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.