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Finding the Fourth Proportional to 275,653.11, 380,442.47 and 168,285.48

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Solution

The fourth proportional to 275,653.11, 380,442.47 and 168,285.48 is: 232,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,653.11 : 380,442.47 = 168,285.48 : x
  2. Step 2: Convert to fraction form
    275,653.11/380,442.47 = 168,285.48/x
  3. Step 3: Cross multiply
    275,653.11x = 380,442.47 × 168,285.48
  4. Step 4: Simplify right side
    275,653.11x = 64,022,942,834.91
  5. Step 5: Solve for x
    x = 64,022,942,834.91/275,653.11
  6. Step 6: Final answer
    x = 232,259.10

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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.