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Finding the Fourth Proportional to 305,317.80, 421,323.66 and 169,339.70

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Solution

The fourth proportional to 305,317.80, 421,323.66 and 169,339.70 is: 233,680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,317.80 : 421,323.66 = 169,339.70 : x
  2. Step 2: Convert to fraction form
    305,317.80/421,323.66 = 169,339.70/x
  3. Step 3: Cross multiply
    305,317.80x = 421,323.66 × 169,339.70
  4. Step 4: Simplify right side
    305,317.80x = 71,346,822,187.30
  5. Step 5: Solve for x
    x = 71,346,822,187.30/305,317.80
  6. Step 6: Final answer
    x = 233,680.52

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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.