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Finding the Fourth Proportional to 305,276.61, 421,301.99 and 169,316.29

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Solution

The fourth proportional to 305,276.61, 421,301.99 and 169,316.29 is: 233,667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,276.61 : 421,301.99 = 169,316.29 : x
  2. Step 2: Convert to fraction form
    305,276.61/421,301.99 = 169,316.29/x
  3. Step 3: Cross multiply
    305,276.61x = 421,301.99 × 169,316.29
  4. Step 4: Simplify right side
    305,276.61x = 71,333,290,866.34
  5. Step 5: Solve for x
    x = 71,333,290,866.34/305,276.61
  6. Step 6: Final answer
    x = 233,667.72

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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.