Home / 305,612.93-421,724.73-169,636.19

Finding the Fourth Proportional to 305,612.93, 421,724.73 and 169,636.19

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Solution

The fourth proportional to 305,612.93, 421,724.73 and 169,636.19 is: 234,086.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,612.93 : 421,724.73 = 169,636.19 : x
  2. Step 2: Convert to fraction form
    305,612.93/421,724.73 = 169,636.19/x
  3. Step 3: Cross multiply
    305,612.93x = 421,724.73 × 169,636.19
  4. Step 4: Simplify right side
    305,612.93x = 71,539,776,425.98
  5. Step 5: Solve for x
    x = 71,539,776,425.98/305,612.93
  6. Step 6: Final answer
    x = 234,086.22

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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.