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Finding the Fourth Proportional to 219,909.17, 303,318.16 and 201,818.32

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Solution

The fourth proportional to 219,909.17, 303,318.16 and 201,818.32 is: 278,365.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,909.17 : 303,318.16 = 201,818.32 : x
  2. Step 2: Convert to fraction form
    219,909.17/303,318.16 = 201,818.32/x
  3. Step 3: Cross multiply
    219,909.17x = 303,318.16 × 201,818.32
  4. Step 4: Simplify right side
    219,909.17x = 61,215,160,213.85
  5. Step 5: Solve for x
    x = 61,215,160,213.85/219,909.17
  6. Step 6: Final answer
    x = 278,365.66

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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.