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Finding the Fourth Proportional to 314,928,689.20, 472,393,033.80 and 263,910,353.20

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Solution

The fourth proportional to 314,928,689.20, 472,393,033.80 and 263,910,353.20 is: 395,865,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,689.20 : 472,393,033.80 = 263,910,353.20 : x
  2. Step 2: Convert to fraction form
    314,928,689.20/472,393,033.80 = 263,910,353.20/x
  3. Step 3: Cross multiply
    314,928,689.20x = 472,393,033.80 × 263,910,353.20
  4. Step 4: Simplify right side
    314,928,689.20x = 124,669,412,399,377,536
  5. Step 5: Solve for x
    x = 124,669,412,399,377,536/314,928,689.20
  6. Step 6: Final answer
    x = 395,865,529.80

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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.