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Finding the Fourth Proportional to 275,641.32, 380,375.40 and 168,390.84

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Solution

The fourth proportional to 275,641.32, 380,375.40 and 168,390.84 is: 232,373.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,641.32 : 380,375.40 = 168,390.84 : x
  2. Step 2: Convert to fraction form
    275,641.32/380,375.40 = 168,390.84/x
  3. Step 3: Cross multiply
    275,641.32x = 380,375.40 × 168,390.84
  4. Step 4: Simplify right side
    275,641.32x = 64,051,733,121.34
  5. Step 5: Solve for x
    x = 64,051,733,121.34/275,641.32
  6. Step 6: Final answer
    x = 232,373.48

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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.