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Finding the Fourth Proportional to 365,487.70, 548,278.78 and 140,912.36

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Solution

The fourth proportional to 365,487.70, 548,278.78 and 140,912.36 is: 211,386.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,487.70 : 548,278.78 = 140,912.36 : x
  2. Step 2: Convert to fraction form
    365,487.70/548,278.78 = 140,912.36/x
  3. Step 3: Cross multiply
    365,487.70x = 548,278.78 × 140,912.36
  4. Step 4: Simplify right side
    365,487.70x = 77,259,256,827.72
  5. Step 5: Solve for x
    x = 77,259,256,827.72/365,487.70
  6. Step 6: Final answer
    x = 211,386.75

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1.5x scale

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.