Home / 219,008.88-328,372.07-85,902.59

Finding the Fourth Proportional to 219,008.88, 328,372.07 and 85,902.59

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Solution

The fourth proportional to 219,008.88, 328,372.07 and 85,902.59 is: 128,798.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,008.88 : 328,372.07 = 85,902.59 : x
  2. Step 2: Convert to fraction form
    219,008.88/328,372.07 = 85,902.59/x
  3. Step 3: Cross multiply
    219,008.88x = 328,372.07 × 85,902.59
  4. Step 4: Simplify right side
    219,008.88x = 28,208,011,296.66
  5. Step 5: Solve for x
    x = 28,208,011,296.66/219,008.88
  6. Step 6: Final answer
    x = 128,798.48

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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.