Home / 305,126.58-421,099.55-169,203.15

Finding the Fourth Proportional to 305,126.58, 421,099.55 and 169,203.15

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Solution

The fourth proportional to 305,126.58, 421,099.55 and 169,203.15 is: 233,514.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,126.58 : 421,099.55 = 169,203.15 : x
  2. Step 2: Convert to fraction form
    305,126.58/421,099.55 = 169,203.15/x
  3. Step 3: Cross multiply
    305,126.58x = 421,099.55 × 169,203.15
  4. Step 4: Simplify right side
    305,126.58x = 71,251,369,477.57
  5. Step 5: Solve for x
    x = 71,251,369,477.57/305,126.58
  6. Step 6: Final answer
    x = 233,514.14

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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.