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Finding the Fourth Proportional to 415,005.10, 622,507.65 and 310,029.10

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Solution

The fourth proportional to 415,005.10, 622,507.65 and 310,029.10 is: 465,043.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,005.10 : 622,507.65 = 310,029.10 : x
  2. Step 2: Convert to fraction form
    415,005.10/622,507.65 = 310,029.10/x
  3. Step 3: Cross multiply
    415,005.10x = 622,507.65 × 310,029.10
  4. Step 4: Simplify right side
    415,005.10x = 192,995,486,472.62
  5. Step 5: Solve for x
    x = 192,995,486,472.62/415,005.10
  6. Step 6: Final answer
    x = 465,043.65

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1.5x scale

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.