Home / 306,721.94-423,290.10-170,764.69

Finding the Fourth Proportional to 306,721.94, 423,290.10 and 170,764.69

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Solution

The fourth proportional to 306,721.94, 423,290.10 and 170,764.69 is: 235,662.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,721.94 : 423,290.10 = 170,764.69 : x
  2. Step 2: Convert to fraction form
    306,721.94/423,290.10 = 170,764.69/x
  3. Step 3: Cross multiply
    306,721.94x = 423,290.10 × 170,764.69
  4. Step 4: Simplify right side
    306,721.94x = 72,283,002,706.57
  5. Step 5: Solve for x
    x = 72,283,002,706.57/306,721.94
  6. Step 6: Final answer
    x = 235,662.97

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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.