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Finding the Fourth Proportional to 289,780, 399,897.84 and 169,005.04

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Solution

The fourth proportional to 289,780, 399,897.84 and 169,005.04 is: 233,227.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,780 : 399,897.84 = 169,005.04 : x
  2. Step 2: Convert to fraction form
    289,780/399,897.84 = 169,005.04/x
  3. Step 3: Cross multiply
    289,780x = 399,897.84 × 169,005.04
  4. Step 4: Simplify right side
    289,780x = 67,584,750,445.11
  5. Step 5: Solve for x
    x = 67,584,750,445.11/289,780
  6. Step 6: Final answer
    x = 233,227.80

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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.