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Finding the Fourth Proportional to 289,767.42, 399,889.43 and 168,889.23

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Solution

The fourth proportional to 289,767.42, 399,889.43 and 168,889.23 is: 233,073.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,767.42 : 399,889.43 = 168,889.23 : x
  2. Step 2: Convert to fraction form
    289,767.42/399,889.43 = 168,889.23/x
  3. Step 3: Cross multiply
    289,767.42x = 399,889.43 × 168,889.23
  4. Step 4: Simplify right side
    289,767.42x = 67,537,017,073.39
  5. Step 5: Solve for x
    x = 67,537,017,073.39/289,767.42
  6. Step 6: Final answer
    x = 233,073.19

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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.