Home / 287,333,821.20-431,000,731.80-172,448,086.80

Finding the Fourth Proportional to 287,333,821.20, 431,000,731.80 and 172,448,086.80

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Solution

The fourth proportional to 287,333,821.20, 431,000,731.80 and 172,448,086.80 is: 258,672,130.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,333,821.20 : 431,000,731.80 = 172,448,086.80 : x
  2. Step 2: Convert to fraction form
    287,333,821.20/431,000,731.80 = 172,448,086.80/x
  3. Step 3: Cross multiply
    287,333,821.20x = 431,000,731.80 × 172,448,086.80
  4. Step 4: Simplify right side
    287,333,821.20x = 74,325,251,608,309,920
  5. Step 5: Solve for x
    x = 74,325,251,608,309,920/287,333,821.20
  6. Step 6: Final answer
    x = 258,672,130.20

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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.