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Finding the Fourth Proportional to 305,569.71, 421,679.86 and 169,595.69

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Solution

The fourth proportional to 305,569.71, 421,679.86 and 169,595.69 is: 234,038.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,569.71 : 421,679.86 = 169,595.69 : x
  2. Step 2: Convert to fraction form
    305,569.71/421,679.86 = 169,595.69/x
  3. Step 3: Cross multiply
    305,569.71x = 421,679.86 × 169,595.69
  4. Step 4: Simplify right side
    305,569.71x = 71,515,084,283.41
  5. Step 5: Solve for x
    x = 71,515,084,283.41/305,569.71
  6. Step 6: Final answer
    x = 234,038.53

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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.