Home / 319,665,999.68-441,139,065.12-172,988,287.68

Finding the Fourth Proportional to 319,665,999.68, 441,139,065.12 and 172,988,287.68

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Solution

The fourth proportional to 319,665,999.68, 441,139,065.12 and 172,988,287.68 is: 238,723,829.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,665,999.68 : 441,139,065.12 = 172,988,287.68 : x
  2. Step 2: Convert to fraction form
    319,665,999.68/441,139,065.12 = 172,988,287.68/x
  3. Step 3: Cross multiply
    319,665,999.68x = 441,139,065.12 × 172,988,287.68
  4. Step 4: Simplify right side
    319,665,999.68x = 76,311,891,503,864,816
  5. Step 5: Solve for x
    x = 76,311,891,503,864,816/319,665,999.68
  6. Step 6: Final answer
    x = 238,723,829.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.