Home / 442,955,231.90-664,432,847.85-212,868,835.10

Finding the Fourth Proportional to 442,955,231.90, 664,432,847.85 and 212,868,835.10

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Solution

The fourth proportional to 442,955,231.90, 664,432,847.85 and 212,868,835.10 is: 319,303,252.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,955,231.90 : 664,432,847.85 = 212,868,835.10 : x
  2. Step 2: Convert to fraction form
    442,955,231.90/664,432,847.85 = 212,868,835.10/x
  3. Step 3: Cross multiply
    442,955,231.90x = 664,432,847.85 × 212,868,835.10
  4. Step 4: Simplify right side
    442,955,231.90x = 141,437,046,324,005,040
  5. Step 5: Solve for x
    x = 141,437,046,324,005,040/442,955,231.90
  6. Step 6: Final answer
    x = 319,303,252.65

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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.