Home / 212,309,150.40-318,478,188.96-72,192,551.04

Finding the Fourth Proportional to 212,309,150.40, 318,478,188.96 and 72,192,551.04

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Solution

The fourth proportional to 212,309,150.40, 318,478,188.96 and 72,192,551.04 is: 108,293,744.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,309,150.40 : 318,478,188.96 = 72,192,551.04 : x
  2. Step 2: Convert to fraction form
    212,309,150.40/318,478,188.96 = 72,192,551.04/x
  3. Step 3: Cross multiply
    212,309,150.40x = 318,478,188.96 × 72,192,551.04
  4. Step 4: Simplify right side
    212,309,150.40x = 22,991,752,911,621,564
  5. Step 5: Solve for x
    x = 22,991,752,911,621,564/212,309,150.40
  6. Step 6: Final answer
    x = 108,293,744.61

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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.