Home / 442,955,217.90-664,432,826.85-212,868,821.10

Finding the Fourth Proportional to 442,955,217.90, 664,432,826.85 and 212,868,821.10

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Solution

The fourth proportional to 442,955,217.90, 664,432,826.85 and 212,868,821.10 is: 319,303,231.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,955,217.90 : 664,432,826.85 = 212,868,821.10 : x
  2. Step 2: Convert to fraction form
    442,955,217.90/664,432,826.85 = 212,868,821.10/x
  3. Step 3: Cross multiply
    442,955,217.90x = 664,432,826.85 × 212,868,821.10
  4. Step 4: Simplify right side
    442,955,217.90x = 141,437,032,551,699,920
  5. Step 5: Solve for x
    x = 141,437,032,551,699,920/442,955,217.90
  6. Step 6: Final answer
    x = 319,303,231.65

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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.