Home / 368,799,918.85-508,972,900.38-210,036,755.21

Finding the Fourth Proportional to 368,799,918.85, 508,972,900.38 and 210,036,755.21

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Solution

The fourth proportional to 368,799,918.85, 508,972,900.38 and 210,036,755.21 is: 289,867,245.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,799,918.85 : 508,972,900.38 = 210,036,755.21 : x
  2. Step 2: Convert to fraction form
    368,799,918.85/508,972,900.38 = 210,036,755.21/x
  3. Step 3: Cross multiply
    368,799,918.85x = 508,972,900.38 × 210,036,755.21
  4. Step 4: Simplify right side
    368,799,918.85x = 106,903,016,485,637,776
  5. Step 5: Solve for x
    x = 106,903,016,485,637,776/368,799,918.85
  6. Step 6: Final answer
    x = 289,867,245.15

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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.