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Finding the Fourth Proportional to 303,352.17, 418,777.55 and 188,667.78

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Solution

The fourth proportional to 303,352.17, 418,777.55 and 188,667.78 is: 260,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,352.17 : 418,777.55 = 188,667.78 : x
  2. Step 2: Convert to fraction form
    303,352.17/418,777.55 = 188,667.78/x
  3. Step 3: Cross multiply
    303,352.17x = 418,777.55 × 188,667.78
  4. Step 4: Simplify right side
    303,352.17x = 79,009,832,150.31
  5. Step 5: Solve for x
    x = 79,009,832,150.31/303,352.17
  6. Step 6: Final answer
    x = 260,455.80

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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.