Home / 306,406,012.76-422,970,768.89-205,992,686.01

Finding the Fourth Proportional to 306,406,012.76, 422,970,768.89 and 205,992,686.01

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Solution

The fourth proportional to 306,406,012.76, 422,970,768.89 and 205,992,686.01 is: 284,357,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,406,012.76 : 422,970,768.89 = 205,992,686.01 : x
  2. Step 2: Convert to fraction form
    306,406,012.76/422,970,768.89 = 205,992,686.01/x
  3. Step 3: Cross multiply
    306,406,012.76x = 422,970,768.89 × 205,992,686.01
  4. Step 4: Simplify right side
    306,406,012.76x = 87,128,884,786,336,080
  5. Step 5: Solve for x
    x = 87,128,884,786,336,080/306,406,012.76
  6. Step 6: Final answer
    x = 284,357,620.80

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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.