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Finding the Fourth Proportional to 315,169.26, 472,709.34 and 90,548.97

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Solution

The fourth proportional to 315,169.26, 472,709.34 and 90,548.97 is: 135,810.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,169.26 : 472,709.34 = 90,548.97 : x
  2. Step 2: Convert to fraction form
    315,169.26/472,709.34 = 90,548.97/x
  3. Step 3: Cross multiply
    315,169.26x = 472,709.34 × 90,548.97
  4. Step 4: Simplify right side
    315,169.26x = 42,803,343,846.38
  5. Step 5: Solve for x
    x = 42,803,343,846.38/315,169.26
  6. Step 6: Final answer
    x = 135,810.66

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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.