Home / 305,308.28-421,310.57-169,330.19

Finding the Fourth Proportional to 305,308.28, 421,310.57 and 169,330.19

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Solution

The fourth proportional to 305,308.28, 421,310.57 and 169,330.19 is: 233,667.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,308.28 : 421,310.57 = 169,330.19 : x
  2. Step 2: Convert to fraction form
    305,308.28/421,310.57 = 169,330.19/x
  3. Step 3: Cross multiply
    305,308.28x = 421,310.57 × 169,330.19
  4. Step 4: Simplify right side
    305,308.28x = 71,340,595,913.90
  5. Step 5: Solve for x
    x = 71,340,595,913.90/305,308.28
  6. Step 6: Final answer
    x = 233,667.42

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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.