Home / 442,956,100.90-664,434,151.35-212,869,704.10

Finding the Fourth Proportional to 442,956,100.90, 664,434,151.35 and 212,869,704.10

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Solution

The fourth proportional to 442,956,100.90, 664,434,151.35 and 212,869,704.10 is: 319,304,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,956,100.90 : 664,434,151.35 = 212,869,704.10 : x
  2. Step 2: Convert to fraction form
    442,956,100.90/664,434,151.35 = 212,869,704.10/x
  3. Step 3: Cross multiply
    442,956,100.90x = 664,434,151.35 × 212,869,704.10
  4. Step 4: Simplify right side
    442,956,100.90x = 141,437,901,191,809,120
  5. Step 5: Solve for x
    x = 141,437,901,191,809,120/442,956,100.90
  6. Step 6: Final answer
    x = 319,304,556.15

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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.