Home / 319,766,645.40-479,649,968.10-115,315,387.80

Finding the Fourth Proportional to 319,766,645.40, 479,649,968.10 and 115,315,387.80

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Solution

The fourth proportional to 319,766,645.40, 479,649,968.10 and 115,315,387.80 is: 172,973,081.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,766,645.40 : 479,649,968.10 = 115,315,387.80 : x
  2. Step 2: Convert to fraction form
    319,766,645.40/479,649,968.10 = 115,315,387.80/x
  3. Step 3: Cross multiply
    319,766,645.40x = 479,649,968.10 × 115,315,387.80
  4. Step 4: Simplify right side
    319,766,645.40x = 55,311,022,079,709,128
  5. Step 5: Solve for x
    x = 55,311,022,079,709,128/319,766,645.40
  6. Step 6: Final answer
    x = 172,973,081.70

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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.