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Finding the Fourth Proportional to 306,609.80, 423,117.29 and 170,643.71

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Solution

The fourth proportional to 306,609.80, 423,117.29 and 170,643.71 is: 235,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,609.80 : 423,117.29 = 170,643.71 : x
  2. Step 2: Convert to fraction form
    306,609.80/423,117.29 = 170,643.71/x
  3. Step 3: Cross multiply
    306,609.80x = 423,117.29 × 170,643.71
  4. Step 4: Simplify right side
    306,609.80x = 72,202,305,615.15
  5. Step 5: Solve for x
    x = 72,202,305,615.15/306,609.80
  6. Step 6: Final answer
    x = 235,485.97

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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.