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Finding the Fourth Proportional to 313,119.48, 432,105.66 and 169,879.49

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Solution

The fourth proportional to 313,119.48, 432,105.66 and 169,879.49 is: 234,434.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,119.48 : 432,105.66 = 169,879.49 : x
  2. Step 2: Convert to fraction form
    313,119.48/432,105.66 = 169,879.49/x
  3. Step 3: Cross multiply
    313,119.48x = 432,105.66 × 169,879.49
  4. Step 4: Simplify right side
    313,119.48x = 73,405,886,986.39
  5. Step 5: Solve for x
    x = 73,405,886,986.39/313,119.48
  6. Step 6: Final answer
    x = 234,434.11

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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.