Home / 305,308.35-421,375.95-169,386.08

Finding the Fourth Proportional to 305,308.35, 421,375.95 and 169,386.08

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Solution

The fourth proportional to 305,308.35, 421,375.95 and 169,386.08 is: 233,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,308.35 : 421,375.95 = 169,386.08 : x
  2. Step 2: Convert to fraction form
    305,308.35/421,375.95 = 169,386.08/x
  3. Step 3: Cross multiply
    305,308.35x = 421,375.95 × 169,386.08
  4. Step 4: Simplify right side
    305,308.35x = 71,375,218,269.90
  5. Step 5: Solve for x
    x = 71,375,218,269.90/305,308.35
  6. Step 6: Final answer
    x = 233,780.76

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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.