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Finding the Fourth Proportional to 305,569.59, 421,679.68 and 169,595.56

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Solution

The fourth proportional to 305,569.59, 421,679.68 and 169,595.56 is: 234,038.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,569.59 : 421,679.68 = 169,595.56 : x
  2. Step 2: Convert to fraction form
    305,569.59/421,679.68 = 169,595.56/x
  3. Step 3: Cross multiply
    305,569.59x = 421,679.68 × 169,595.56
  4. Step 4: Simplify right side
    305,569.59x = 71,515,001,470.22
  5. Step 5: Solve for x
    x = 71,515,001,470.22/305,569.59
  6. Step 6: Final answer
    x = 234,038.35

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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.