Home / 305,251.45-421,247.01-169,306.22

Finding the Fourth Proportional to 305,251.45, 421,247.01 and 169,306.22

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Solution

The fourth proportional to 305,251.45, 421,247.01 and 169,306.22 is: 233,642.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,251.45 : 421,247.01 = 169,306.22 : x
  2. Step 2: Convert to fraction form
    305,251.45/421,247.01 = 169,306.22/x
  3. Step 3: Cross multiply
    305,251.45x = 421,247.01 × 169,306.22
  4. Step 4: Simplify right side
    305,251.45x = 71,319,736,839.38
  5. Step 5: Solve for x
    x = 71,319,736,839.38/305,251.45
  6. Step 6: Final answer
    x = 233,642.58

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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.