Home / 215,934.16-323,947.65-66,184.78

Finding the Fourth Proportional to 215,934.16, 323,947.65 and 66,184.78

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Solution

The fourth proportional to 215,934.16, 323,947.65 and 66,184.78 is: 99,291.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,934.16 : 323,947.65 = 66,184.78 : x
  2. Step 2: Convert to fraction form
    215,934.16/323,947.65 = 66,184.78/x
  3. Step 3: Cross multiply
    215,934.16x = 323,947.65 × 66,184.78
  4. Step 4: Simplify right side
    215,934.16x = 21,440,403,946.77
  5. Step 5: Solve for x
    x = 21,440,403,946.77/215,934.16
  6. Step 6: Final answer
    x = 99,291.39

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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.