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Finding the Fourth Proportional to 603,718, 905,608 and 154,442.76

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Solution

The fourth proportional to 603,718, 905,608 and 154,442.76 is: 231,672.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,718 : 905,608 = 154,442.76 : x
  2. Step 2: Convert to fraction form
    603,718/905,608 = 154,442.76/x
  3. Step 3: Cross multiply
    603,718x = 905,608 × 154,442.76
  4. Step 4: Simplify right side
    603,718x = 139,864,598,998.08
  5. Step 5: Solve for x
    x = 139,864,598,998.08/603,718
  6. Step 6: Final answer
    x = 231,672.07

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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.