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Finding the Fourth Proportional to 213,403,487.80, 299,571,098.60 and 213,403,487.80

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Solution

The fourth proportional to 213,403,487.80, 299,571,098.60 and 213,403,487.80 is: 299,571,098.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,403,487.80 : 299,571,098.60 = 213,403,487.80 : x
  2. Step 2: Convert to fraction form
    213,403,487.80/299,571,098.60 = 213,403,487.80/x
  3. Step 3: Cross multiply
    213,403,487.80x = 299,571,098.60 × 213,403,487.80
  4. Step 4: Simplify right side
    213,403,487.80x = 63,929,517,285,317,704
  5. Step 5: Solve for x
    x = 63,929,517,285,317,704/213,403,487.80
  6. Step 6: Final answer
    x = 299,571,098.60

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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.