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Finding the Fourth Proportional to 343,649.75, 474,213.86 and 190,678.25

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Solution

The fourth proportional to 343,649.75, 474,213.86 and 190,678.25 is: 263,123.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,649.75 : 474,213.86 = 190,678.25 : x
  2. Step 2: Convert to fraction form
    343,649.75/474,213.86 = 190,678.25/x
  3. Step 3: Cross multiply
    343,649.75x = 474,213.86 × 190,678.25
  4. Step 4: Simplify right side
    343,649.75x = 90,422,265,626.08
  5. Step 5: Solve for x
    x = 90,422,265,626.08/343,649.75
  6. Step 6: Final answer
    x = 263,123.33

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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.