Home / 306,405,981.90-422,970,726.20-205,992,655.14

Finding the Fourth Proportional to 306,405,981.90, 422,970,726.20 and 205,992,655.14

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Solution

The fourth proportional to 306,405,981.90, 422,970,726.20 and 205,992,655.14 is: 284,357,578.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,405,981.90 : 422,970,726.20 = 205,992,655.14 : x
  2. Step 2: Convert to fraction form
    306,405,981.90/422,970,726.20 = 205,992,655.14/x
  3. Step 3: Cross multiply
    306,405,981.90x = 422,970,726.20 × 205,992,655.14
  4. Step 4: Simplify right side
    306,405,981.90x = 87,128,862,936,431,952
  5. Step 5: Solve for x
    x = 87,128,862,936,431,952/306,405,981.90
  6. Step 6: Final answer
    x = 284,357,578.13

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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.