Home / 311,930,999.20-468,904,268.40-287,744,528.80

Finding the Fourth Proportional to 311,930,999.20, 468,904,268.40 and 287,744,528.80

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Solution

The fourth proportional to 311,930,999.20, 468,904,268.40 and 287,744,528.80 is: 432,546,422.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,930,999.20 : 468,904,268.40 = 287,744,528.80 : x
  2. Step 2: Convert to fraction form
    311,930,999.20/468,904,268.40 = 287,744,528.80/x
  3. Step 3: Cross multiply
    311,930,999.20x = 468,904,268.40 × 287,744,528.80
  4. Step 4: Simplify right side
    311,930,999.20x = 134,924,637,763,066,736
  5. Step 5: Solve for x
    x = 134,924,637,763,066,736/311,930,999.20
  6. Step 6: Final answer
    x = 432,546,422.48

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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.