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Finding the Fourth Proportional to 306,301.40, 422,663.56 and 170,313.42

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Solution

The fourth proportional to 306,301.40, 422,663.56 and 170,313.42 is: 235,014.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,301.40 : 422,663.56 = 170,313.42 : x
  2. Step 2: Convert to fraction form
    306,301.40/422,663.56 = 170,313.42/x
  3. Step 3: Cross multiply
    306,301.40x = 422,663.56 × 170,313.42
  4. Step 4: Simplify right side
    306,301.40x = 71,985,276,412.98
  5. Step 5: Solve for x
    x = 71,985,276,412.98/306,301.40
  6. Step 6: Final answer
    x = 235,014.52

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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.