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Finding the Fourth Proportional to 305,348.61, 421,383.43 and 167,526.64

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Solution

The fourth proportional to 305,348.61, 421,383.43 and 167,526.64 is: 231,188.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,348.61 : 421,383.43 = 167,526.64 : x
  2. Step 2: Convert to fraction form
    305,348.61/421,383.43 = 167,526.64/x
  3. Step 3: Cross multiply
    305,348.61x = 421,383.43 × 167,526.64
  4. Step 4: Simplify right side
    305,348.61x = 70,592,950,179.58
  5. Step 5: Solve for x
    x = 70,592,950,179.58/305,348.61
  6. Step 6: Final answer
    x = 231,188.05

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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.