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Finding the Fourth Proportional to 219,017.64, 328,529.09 and 85,960.56

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Solution

The fourth proportional to 219,017.64, 328,529.09 and 85,960.56 is: 128,941.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,017.64 : 328,529.09 = 85,960.56 : x
  2. Step 2: Convert to fraction form
    219,017.64/328,529.09 = 85,960.56/x
  3. Step 3: Cross multiply
    219,017.64x = 328,529.09 × 85,960.56
  4. Step 4: Simplify right side
    219,017.64x = 28,240,544,552.69
  5. Step 5: Solve for x
    x = 28,240,544,552.69/219,017.64
  6. Step 6: Final answer
    x = 128,941.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.