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Finding the Fourth Proportional to 612,392.37, 918,273.86 and 275,144.01

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Solution

The fourth proportional to 612,392.37, 918,273.86 and 275,144.01 is: 412,574.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,392.37 : 918,273.86 = 275,144.01 : x
  2. Step 2: Convert to fraction form
    612,392.37/918,273.86 = 275,144.01/x
  3. Step 3: Cross multiply
    612,392.37x = 918,273.86 × 275,144.01
  4. Step 4: Simplify right side
    612,392.37x = 252,657,552,118.58
  5. Step 5: Solve for x
    x = 252,657,552,118.58/612,392.37
  6. Step 6: Final answer
    x = 412,574.62

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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.