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Finding the Fourth Proportional to 372,276,648.90, 558,414,973.35 and 99,647,415.90

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Solution

The fourth proportional to 372,276,648.90, 558,414,973.35 and 99,647,415.90 is: 149,471,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,276,648.90 : 558,414,973.35 = 99,647,415.90 : x
  2. Step 2: Convert to fraction form
    372,276,648.90/558,414,973.35 = 99,647,415.90/x
  3. Step 3: Cross multiply
    372,276,648.90x = 558,414,973.35 × 99,647,415.90
  4. Step 4: Simplify right side
    372,276,648.90x = 55,644,609,094,194,872
  5. Step 5: Solve for x
    x = 55,644,609,094,194,872/372,276,648.90
  6. Step 6: Final answer
    x = 149,471,123.85

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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.