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Finding the Fourth Proportional to 612,307.73, 918,464.51 and 185,847.25

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Solution

The fourth proportional to 612,307.73, 918,464.51 and 185,847.25 is: 278,771.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,307.73 : 918,464.51 = 185,847.25 : x
  2. Step 2: Convert to fraction form
    612,307.73/918,464.51 = 185,847.25/x
  3. Step 3: Cross multiply
    612,307.73x = 918,464.51 × 185,847.25
  4. Step 4: Simplify right side
    612,307.73x = 170,694,101,574.55
  5. Step 5: Solve for x
    x = 170,694,101,574.55/612,307.73
  6. Step 6: Final answer
    x = 278,771.76

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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.