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Finding the Fourth Proportional to 289,638.04, 434,456.18 and 73,496.34

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Solution

The fourth proportional to 289,638.04, 434,456.18 and 73,496.34 is: 110,244.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,638.04 : 434,456.18 = 73,496.34 : x
  2. Step 2: Convert to fraction form
    289,638.04/434,456.18 = 73,496.34/x
  3. Step 3: Cross multiply
    289,638.04x = 434,456.18 × 73,496.34
  4. Step 4: Simplify right side
    289,638.04x = 31,930,939,120.38
  5. Step 5: Solve for x
    x = 31,930,939,120.38/289,638.04
  6. Step 6: Final answer
    x = 110,244.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.