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Finding the Fourth Proportional to 300,965.55, 415,331.51 and 165,005.16

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Solution

The fourth proportional to 300,965.55, 415,331.51 and 165,005.16 is: 227,706.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,965.55 : 415,331.51 = 165,005.16 : x
  2. Step 2: Convert to fraction form
    300,965.55/415,331.51 = 165,005.16/x
  3. Step 3: Cross multiply
    300,965.55x = 415,331.51 × 165,005.16
  4. Step 4: Simplify right side
    300,965.55x = 68,531,842,260.59
  5. Step 5: Solve for x
    x = 68,531,842,260.59/300,965.55
  6. Step 6: Final answer
    x = 227,706.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.