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Finding the Fourth Proportional to 209,952,685.80, 314,929,028.70 and 132,858,311.40

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Solution

The fourth proportional to 209,952,685.80, 314,929,028.70 and 132,858,311.40 is: 199,287,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,685.80 : 314,929,028.70 = 132,858,311.40 : x
  2. Step 2: Convert to fraction form
    209,952,685.80/314,929,028.70 = 132,858,311.40/x
  3. Step 3: Cross multiply
    209,952,685.80x = 314,929,028.70 × 132,858,311.40
  4. Step 4: Simplify right side
    209,952,685.80x = 41,840,938,963,924,136
  5. Step 5: Solve for x
    x = 41,840,938,963,924,136/209,952,685.80
  6. Step 6: Final answer
    x = 199,287,467.10

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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.