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Finding the Fourth Proportional to 275,653.87, 380,390.55 and 160,938.87

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Solution

The fourth proportional to 275,653.87, 380,390.55 and 160,938.87 is: 222,088.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,653.87 : 380,390.55 = 160,938.87 : x
  2. Step 2: Convert to fraction form
    275,653.87/380,390.55 = 160,938.87/x
  3. Step 3: Cross multiply
    275,653.87x = 380,390.55 × 160,938.87
  4. Step 4: Simplify right side
    275,653.87x = 61,219,625,678.03
  5. Step 5: Solve for x
    x = 61,219,625,678.03/275,653.87
  6. Step 6: Final answer
    x = 222,088.76

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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.