Home / 305,579.20-421,688.16-169,619.20

Finding the Fourth Proportional to 305,579.20, 421,688.16 and 169,619.20

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Solution

The fourth proportional to 305,579.20, 421,688.16 and 169,619.20 is: 234,068.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,579.20 : 421,688.16 = 169,619.20 : x
  2. Step 2: Convert to fraction form
    305,579.20/421,688.16 = 169,619.20/x
  3. Step 3: Cross multiply
    305,579.20x = 421,688.16 × 169,619.20
  4. Step 4: Simplify right side
    305,579.20x = 71,526,408,348.67
  5. Step 5: Solve for x
    x = 71,526,408,348.67/305,579.20
  6. Step 6: Final answer
    x = 234,068.31

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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.