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Finding the Fourth Proportional to 199,315,687.20, 298,973,530.80 and 199,315,687.20

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Solution

The fourth proportional to 199,315,687.20, 298,973,530.80 and 199,315,687.20 is: 298,973,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,315,687.20 : 298,973,530.80 = 199,315,687.20 : x
  2. Step 2: Convert to fraction form
    199,315,687.20/298,973,530.80 = 199,315,687.20/x
  3. Step 3: Cross multiply
    199,315,687.20x = 298,973,530.80 × 199,315,687.20
  4. Step 4: Simplify right side
    199,315,687.20x = 59,590,114,746,012,368
  5. Step 5: Solve for x
    x = 59,590,114,746,012,368/199,315,687.20
  6. Step 6: Final answer
    x = 298,973,530.80

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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.