Home / 212,856,013.80-319,284,020.70-210,840,474.60

Finding the Fourth Proportional to 212,856,013.80, 319,284,020.70 and 210,840,474.60

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Solution

The fourth proportional to 212,856,013.80, 319,284,020.70 and 210,840,474.60 is: 316,260,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,856,013.80 : 319,284,020.70 = 210,840,474.60 : x
  2. Step 2: Convert to fraction form
    212,856,013.80/319,284,020.70 = 210,840,474.60/x
  3. Step 3: Cross multiply
    212,856,013.80x = 319,284,020.70 × 210,840,474.60
  4. Step 4: Simplify right side
    212,856,013.80x = 67,317,994,456,584,216
  5. Step 5: Solve for x
    x = 67,317,994,456,584,216/212,856,013.80
  6. Step 6: Final answer
    x = 316,260,711.90

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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.