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Finding the Fourth Proportional to 209,628,400.80, 314,442,601.20 and 209,628,400.80

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Solution

The fourth proportional to 209,628,400.80, 314,442,601.20 and 209,628,400.80 is: 314,442,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,628,400.80 : 314,442,601.20 = 209,628,400.80 : x
  2. Step 2: Convert to fraction form
    209,628,400.80/314,442,601.20 = 209,628,400.80/x
  3. Step 3: Cross multiply
    209,628,400.80x = 314,442,601.20 × 209,628,400.80
  4. Step 4: Simplify right side
    209,628,400.80x = 65,916,099,632,948,160
  5. Step 5: Solve for x
    x = 65,916,099,632,948,160/209,628,400.80
  6. Step 6: Final answer
    x = 314,442,601.20

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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.