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Finding the Fourth Proportional to 407,137.05, 610,612.61 and 154,445.60

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Solution

The fourth proportional to 407,137.05, 610,612.61 and 154,445.60 is: 231,633.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,137.05 : 610,612.61 = 154,445.60 : x
  2. Step 2: Convert to fraction form
    407,137.05/610,612.61 = 154,445.60/x
  3. Step 3: Cross multiply
    407,137.05x = 610,612.61 × 154,445.60
  4. Step 4: Simplify right side
    407,137.05x = 94,306,431,673.32
  5. Step 5: Solve for x
    x = 94,306,431,673.32/407,137.05
  6. Step 6: Final answer
    x = 231,633.14

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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.