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Finding the Fourth Proportional to 612,291.30, 918,305.73 and 191,512.50

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Solution

The fourth proportional to 612,291.30, 918,305.73 and 191,512.50 is: 287,227.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,291.30 : 918,305.73 = 191,512.50 : x
  2. Step 2: Convert to fraction form
    612,291.30/918,305.73 = 191,512.50/x
  3. Step 3: Cross multiply
    612,291.30x = 918,305.73 × 191,512.50
  4. Step 4: Simplify right side
    612,291.30x = 175,867,026,116.63
  5. Step 5: Solve for x
    x = 175,867,026,116.63/612,291.30
  6. Step 6: Final answer
    x = 287,227.71

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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.