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Finding the Fourth Proportional to 305,574.04, 421,690.71 and 169,609.60

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Solution

The fourth proportional to 305,574.04, 421,690.71 and 169,609.60 is: 234,060.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,574.04 : 421,690.71 = 169,609.60 : x
  2. Step 2: Convert to fraction form
    305,574.04/421,690.71 = 169,609.60/x
  3. Step 3: Cross multiply
    305,574.04x = 421,690.71 × 169,609.60
  4. Step 4: Simplify right side
    305,574.04x = 71,522,792,646.82
  5. Step 5: Solve for x
    x = 71,522,792,646.82/305,574.04
  6. Step 6: Final answer
    x = 234,060.43

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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.