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Finding the Fourth Proportional to 289,673.32, 399,748.26 and 168,886.12

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Solution

The fourth proportional to 289,673.32, 399,748.26 and 168,886.12 is: 233,062.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,673.32 : 399,748.26 = 168,886.12 : x
  2. Step 2: Convert to fraction form
    289,673.32/399,748.26 = 168,886.12/x
  3. Step 3: Cross multiply
    289,673.32x = 399,748.26 × 168,886.12
  4. Step 4: Simplify right side
    289,673.32x = 67,511,932,608.15
  5. Step 5: Solve for x
    x = 67,511,932,608.15/289,673.32
  6. Step 6: Final answer
    x = 233,062.31

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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.