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Finding the Fourth Proportional to 219,015.14, 328,525.34 and 85,958.06

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Solution

The fourth proportional to 219,015.14, 328,525.34 and 85,958.06 is: 128,938.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,015.14 : 328,525.34 = 85,958.06 : x
  2. Step 2: Convert to fraction form
    219,015.14/328,525.34 = 85,958.06/x
  3. Step 3: Cross multiply
    219,015.14x = 328,525.34 × 85,958.06
  4. Step 4: Simplify right side
    219,015.14x = 28,239,398,814.82
  5. Step 5: Solve for x
    x = 28,239,398,814.82/219,015.14
  6. Step 6: Final answer
    x = 128,938.12

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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.