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Finding the Fourth Proportional to 407,331.78, 611,027.64 and 107,810.32

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Solution

The fourth proportional to 407,331.78, 611,027.64 and 107,810.32 is: 161,723.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,331.78 : 611,027.64 = 107,810.32 : x
  2. Step 2: Convert to fraction form
    407,331.78/611,027.64 = 107,810.32/x
  3. Step 3: Cross multiply
    407,331.78x = 611,027.64 × 107,810.32
  4. Step 4: Simplify right side
    407,331.78x = 65,875,085,397.24
  5. Step 5: Solve for x
    x = 65,875,085,397.24/407,331.78
  6. Step 6: Final answer
    x = 161,723.41

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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.