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Finding the Fourth Proportional to 603,718.06, 905,608.10 and 154,442.80

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Solution

The fourth proportional to 603,718.06, 905,608.10 and 154,442.80 is: 231,672.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,718.06 : 905,608.10 = 154,442.80 : x
  2. Step 2: Convert to fraction form
    603,718.06/905,608.10 = 154,442.80/x
  3. Step 3: Cross multiply
    603,718.06x = 905,608.10 × 154,442.80
  4. Step 4: Simplify right side
    603,718.06x = 139,864,651,316.06
  5. Step 5: Solve for x
    x = 139,864,651,316.06/603,718.06
  6. Step 6: Final answer
    x = 231,672.13

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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.