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Finding the Fourth Proportional to 289,561.31, 399,593.92 and 158,738.74

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Solution

The fourth proportional to 289,561.31, 399,593.92 and 158,738.74 is: 219,059.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,561.31 : 399,593.92 = 158,738.74 : x
  2. Step 2: Convert to fraction form
    289,561.31/399,593.92 = 158,738.74/x
  3. Step 3: Cross multiply
    289,561.31x = 399,593.92 × 158,738.74
  4. Step 4: Simplify right side
    289,561.31x = 63,431,033,374.49
  5. Step 5: Solve for x
    x = 63,431,033,374.49/289,561.31
  6. Step 6: Final answer
    x = 219,059.08

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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.