Home / 321,489,020.40-482,233,530.60-319,221,538.80

Finding the Fourth Proportional to 321,489,020.40, 482,233,530.60 and 319,221,538.80

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Solution

The fourth proportional to 321,489,020.40, 482,233,530.60 and 319,221,538.80 is: 478,832,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,489,020.40 : 482,233,530.60 = 319,221,538.80 : x
  2. Step 2: Convert to fraction form
    321,489,020.40/482,233,530.60 = 319,221,538.80/x
  3. Step 3: Cross multiply
    321,489,020.40x = 482,233,530.60 × 319,221,538.80
  4. Step 4: Simplify right side
    321,489,020.40x = 153,939,329,699,088,896
  5. Step 5: Solve for x
    x = 153,939,329,699,088,896/321,489,020.40
  6. Step 6: Final answer
    x = 478,832,308.20

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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.