Home / 297,216,012.80-445,824,019.20-78,865,932.80

Finding the Fourth Proportional to 297,216,012.80, 445,824,019.20 and 78,865,932.80

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Solution

The fourth proportional to 297,216,012.80, 445,824,019.20 and 78,865,932.80 is: 118,298,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,216,012.80 : 445,824,019.20 = 78,865,932.80 : x
  2. Step 2: Convert to fraction form
    297,216,012.80/445,824,019.20 = 78,865,932.80/x
  3. Step 3: Cross multiply
    297,216,012.80x = 445,824,019.20 × 78,865,932.80
  4. Step 4: Simplify right side
    297,216,012.80x = 35,160,327,138,853,108
  5. Step 5: Solve for x
    x = 35,160,327,138,853,108/297,216,012.80
  6. Step 6: Final answer
    x = 118,298,899.20

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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.