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Finding the Fourth Proportional to 312,570.33, 431,346.63 and 169,330.95

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Solution

The fourth proportional to 312,570.33, 431,346.63 and 169,330.95 is: 233,676.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,570.33 : 431,346.63 = 169,330.95 : x
  2. Step 2: Convert to fraction form
    312,570.33/431,346.63 = 169,330.95/x
  3. Step 3: Cross multiply
    312,570.33x = 431,346.63 × 169,330.95
  4. Step 4: Simplify right side
    312,570.33x = 73,040,334,637.20
  5. Step 5: Solve for x
    x = 73,040,334,637.20/312,570.33
  6. Step 6: Final answer
    x = 233,676.48

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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.