Home / 314,928,709.20-472,393,063.80-199,287,147.60

Finding the Fourth Proportional to 314,928,709.20, 472,393,063.80 and 199,287,147.60

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Solution

The fourth proportional to 314,928,709.20, 472,393,063.80 and 199,287,147.60 is: 298,930,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,709.20 : 472,393,063.80 = 199,287,147.60 : x
  2. Step 2: Convert to fraction form
    314,928,709.20/472,393,063.80 = 199,287,147.60/x
  3. Step 3: Cross multiply
    314,928,709.20x = 472,393,063.80 × 199,287,147.60
  4. Step 4: Simplify right side
    314,928,709.20x = 94,141,866,230,726,816
  5. Step 5: Solve for x
    x = 94,141,866,230,726,816/314,928,709.20
  6. Step 6: Final answer
    x = 298,930,721.40

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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.