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Finding the Fourth Proportional to 305,352.47, 421,352.39 and 169,352.35

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Solution

The fourth proportional to 305,352.47, 421,352.39 and 169,352.35 is: 233,687.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,352.47 : 421,352.39 = 169,352.35 : x
  2. Step 2: Convert to fraction form
    305,352.47/421,352.39 = 169,352.35/x
  3. Step 3: Cross multiply
    305,352.47x = 421,352.39 × 169,352.35
  4. Step 4: Simplify right side
    305,352.47x = 71,357,016,794.62
  5. Step 5: Solve for x
    x = 71,357,016,794.62/305,352.47
  6. Step 6: Final answer
    x = 233,687.37

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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.