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Finding the Fourth Proportional to 305,569.34, 421,679.34 and 169,595.31

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Solution

The fourth proportional to 305,569.34, 421,679.34 and 169,595.31 is: 234,038.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,569.34 : 421,679.34 = 169,595.31 : x
  2. Step 2: Convert to fraction form
    305,569.34/421,679.34 = 169,595.31/x
  3. Step 3: Cross multiply
    305,569.34x = 421,679.34 × 169,595.31
  4. Step 4: Simplify right side
    305,569.34x = 71,514,838,387.90
  5. Step 5: Solve for x
    x = 71,514,838,387.90/305,569.34
  6. Step 6: Final answer
    x = 234,038.01

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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.