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Finding the Fourth Proportional to 413,851.60, 620,777.40 and 147,912.40

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Solution

The fourth proportional to 413,851.60, 620,777.40 and 147,912.40 is: 221,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,851.60 : 620,777.40 = 147,912.40 : x
  2. Step 2: Convert to fraction form
    413,851.60/620,777.40 = 147,912.40/x
  3. Step 3: Cross multiply
    413,851.60x = 620,777.40 × 147,912.40
  4. Step 4: Simplify right side
    413,851.60x = 91,820,675,099.76
  5. Step 5: Solve for x
    x = 91,820,675,099.76/413,851.60
  6. Step 6: Final answer
    x = 221,868.60

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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.