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Finding the Fourth Proportional to 212,869,352.70, 319,304,029.05 and 166,952,850.30

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Solution

The fourth proportional to 212,869,352.70, 319,304,029.05 and 166,952,850.30 is: 250,429,275.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,869,352.70 : 319,304,029.05 = 166,952,850.30 : x
  2. Step 2: Convert to fraction form
    212,869,352.70/319,304,029.05 = 166,952,850.30/x
  3. Step 3: Cross multiply
    212,869,352.70x = 319,304,029.05 × 166,952,850.30
  4. Step 4: Simplify right side
    212,869,352.70x = 53,308,717,762,171,504
  5. Step 5: Solve for x
    x = 53,308,717,762,171,504/212,869,352.70
  6. Step 6: Final answer
    x = 250,429,275.45

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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.