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Finding the Fourth Proportional to 289,801.12, 399,964.08 and 168,944.80

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Solution

The fourth proportional to 289,801.12, 399,964.08 and 168,944.80 is: 233,166.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,801.12 : 399,964.08 = 168,944.80 : x
  2. Step 2: Convert to fraction form
    289,801.12/399,964.08 = 168,944.80/x
  3. Step 3: Cross multiply
    289,801.12x = 399,964.08 × 168,944.80
  4. Step 4: Simplify right side
    289,801.12x = 67,571,851,502.78
  5. Step 5: Solve for x
    x = 67,571,851,502.78/289,801.12
  6. Step 6: Final answer
    x = 233,166.29

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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.