Home / 305,297.03-421,335.88-169,374.78

Finding the Fourth Proportional to 305,297.03, 421,335.88 and 169,374.78

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Solution

The fourth proportional to 305,297.03, 421,335.88 and 169,374.78 is: 233,751.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,297.03 : 421,335.88 = 169,374.78 : x
  2. Step 2: Convert to fraction form
    305,297.03/421,335.88 = 169,374.78/x
  3. Step 3: Cross multiply
    305,297.03x = 421,335.88 × 169,374.78
  4. Step 4: Simplify right side
    305,297.03x = 71,363,671,557.67
  5. Step 5: Solve for x
    x = 71,363,671,557.67/305,297.03
  6. Step 6: Final answer
    x = 233,751.61

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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.