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Finding the Fourth Proportional to 305,118.33, 421,088.15 and 169,194.89

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Solution

The fourth proportional to 305,118.33, 421,088.15 and 169,194.89 is: 233,502.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,118.33 : 421,088.15 = 169,194.89 : x
  2. Step 2: Convert to fraction form
    305,118.33/421,088.15 = 169,194.89/x
  3. Step 3: Cross multiply
    305,118.33x = 421,088.15 × 169,194.89
  4. Step 4: Simplify right side
    305,118.33x = 71,245,964,695.26
  5. Step 5: Solve for x
    x = 71,245,964,695.26/305,118.33
  6. Step 6: Final answer
    x = 233,502.74

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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.