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Finding the Fourth Proportional to 305,284.72, 421,318.76 and 169,362.42

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Solution

The fourth proportional to 305,284.72, 421,318.76 and 169,362.42 is: 233,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,284.72 : 421,318.76 = 169,362.42 : x
  2. Step 2: Convert to fraction form
    305,284.72/421,318.76 = 169,362.42/x
  3. Step 3: Cross multiply
    305,284.72x = 421,318.76 × 169,362.42
  4. Step 4: Simplify right side
    305,284.72x = 71,355,564,785.00
  5. Step 5: Solve for x
    x = 71,355,564,785.00/305,284.72
  6. Step 6: Final answer
    x = 233,734.48

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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.