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Finding the Fourth Proportional to 372,724, 559,173.48 and 123,406

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Solution

The fourth proportional to 372,724, 559,173.48 and 123,406 is: 185,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,724 : 559,173.48 = 123,406 : x
  2. Step 2: Convert to fraction form
    372,724/559,173.48 = 123,406/x
  3. Step 3: Cross multiply
    372,724x = 559,173.48 × 123,406
  4. Step 4: Simplify right side
    372,724x = 69,005,362,472.88
  5. Step 5: Solve for x
    x = 69,005,362,472.88/372,724
  6. Step 6: Final answer
    x = 185,137.96

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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.