Home / 306,406,007.50-422,970,761.62-205,992,680.75

Finding the Fourth Proportional to 306,406,007.50, 422,970,761.62 and 205,992,680.75

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Solution

The fourth proportional to 306,406,007.50, 422,970,761.62 and 205,992,680.75 is: 284,357,613.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,406,007.50 : 422,970,761.62 = 205,992,680.75 : x
  2. Step 2: Convert to fraction form
    306,406,007.50/422,970,761.62 = 205,992,680.75/x
  3. Step 3: Cross multiply
    306,406,007.50x = 422,970,761.62 × 205,992,680.75
  4. Step 4: Simplify right side
    306,406,007.50x = 87,128,881,064,701,792
  5. Step 5: Solve for x
    x = 87,128,881,064,701,792/306,406,007.50
  6. Step 6: Final answer
    x = 284,357,613.53

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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.