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Finding the Fourth Proportional to 612,231.80, 918,477.30 and 185,732.60

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Solution

The fourth proportional to 612,231.80, 918,477.30 and 185,732.60 is: 278,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,231.80 : 918,477.30 = 185,732.60 : x
  2. Step 2: Convert to fraction form
    612,231.80/918,477.30 = 185,732.60/x
  3. Step 3: Cross multiply
    612,231.80x = 918,477.30 × 185,732.60
  4. Step 4: Simplify right side
    612,231.80x = 170,591,176,969.98
  5. Step 5: Solve for x
    x = 170,591,176,969.98/612,231.80
  6. Step 6: Final answer
    x = 278,638.22

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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.