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Finding the Fourth Proportional to 314,928,471.20, 472,392,706.80 and 142,410,912.80

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Solution

The fourth proportional to 314,928,471.20, 472,392,706.80 and 142,410,912.80 is: 213,616,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,471.20 : 472,392,706.80 = 142,410,912.80 : x
  2. Step 2: Convert to fraction form
    314,928,471.20/472,392,706.80 = 142,410,912.80/x
  3. Step 3: Cross multiply
    314,928,471.20x = 472,392,706.80 × 142,410,912.80
  4. Step 4: Simplify right side
    314,928,471.20x = 67,273,876,575,450,776
  5. Step 5: Solve for x
    x = 67,273,876,575,450,776/314,928,471.20
  6. Step 6: Final answer
    x = 213,616,369.20

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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.