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Finding the Fourth Proportional to 299,559,973.20, 449,339,959.80 and 251,187,032.40

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Solution

The fourth proportional to 299,559,973.20, 449,339,959.80 and 251,187,032.40 is: 376,780,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,559,973.20 : 449,339,959.80 = 251,187,032.40 : x
  2. Step 2: Convert to fraction form
    299,559,973.20/449,339,959.80 = 251,187,032.40/x
  3. Step 3: Cross multiply
    299,559,973.20x = 449,339,959.80 × 251,187,032.40
  4. Step 4: Simplify right side
    299,559,973.20x = 112,868,371,040,897,296
  5. Step 5: Solve for x
    x = 112,868,371,040,897,296/299,559,973.20
  6. Step 6: Final answer
    x = 376,780,548.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.