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Finding the Fourth Proportional to 275,663.70, 380,451.06 and 168,210.90

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Solution

The fourth proportional to 275,663.70, 380,451.06 and 168,210.90 is: 232,152.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,663.70 : 380,451.06 = 168,210.90 : x
  2. Step 2: Convert to fraction form
    275,663.70/380,451.06 = 168,210.90/x
  3. Step 3: Cross multiply
    275,663.70x = 380,451.06 × 168,210.90
  4. Step 4: Simplify right side
    275,663.70x = 63,996,015,208.55
  5. Step 5: Solve for x
    x = 63,996,015,208.55/275,663.70
  6. Step 6: Final answer
    x = 232,152.49

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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.