Home / 400,431,261.72-552,599,561.38-221,817,885.90

Finding the Fourth Proportional to 400,431,261.72, 552,599,561.38 and 221,817,885.90

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Solution

The fourth proportional to 400,431,261.72, 552,599,561.38 and 221,817,885.90 is: 306,111,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,431,261.72 : 552,599,561.38 = 221,817,885.90 : x
  2. Step 2: Convert to fraction form
    400,431,261.72/552,599,561.38 = 221,817,885.90/x
  3. Step 3: Cross multiply
    400,431,261.72x = 552,599,561.38 × 221,817,885.90
  4. Step 4: Simplify right side
    400,431,261.72x = 122,576,466,454,578,896
  5. Step 5: Solve for x
    x = 122,576,466,454,578,896/400,431,261.72
  6. Step 6: Final answer
    x = 306,111,131.10

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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.