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Finding the Fourth Proportional to 275,479.76, 380,189.40 and 168,121.76

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Solution

The fourth proportional to 275,479.76, 380,189.40 and 168,121.76 is: 232,024.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,479.76 : 380,189.40 = 168,121.76 : x
  2. Step 2: Convert to fraction form
    275,479.76/380,189.40 = 168,121.76/x
  3. Step 3: Cross multiply
    275,479.76x = 380,189.40 × 168,121.76
  4. Step 4: Simplify right side
    275,479.76x = 63,918,111,061.34
  5. Step 5: Solve for x
    x = 63,918,111,061.34/275,479.76
  6. Step 6: Final answer
    x = 232,024.71

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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.