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Finding the Fourth Proportional to 199,340,062.20, 278,395,842.60 and 199,340,062.20

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Solution

The fourth proportional to 199,340,062.20, 278,395,842.60 and 199,340,062.20 is: 278,395,842.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,340,062.20 : 278,395,842.60 = 199,340,062.20 : x
  2. Step 2: Convert to fraction form
    199,340,062.20/278,395,842.60 = 199,340,062.20/x
  3. Step 3: Cross multiply
    199,340,062.20x = 278,395,842.60 × 199,340,062.20
  4. Step 4: Simplify right side
    199,340,062.20x = 55,495,444,580,105,408
  5. Step 5: Solve for x
    x = 55,495,444,580,105,408/199,340,062.20
  6. Step 6: Final answer
    x = 278,395,842.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.