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Finding the Fourth Proportional to 216,010.90, 323,973.15 and 103,690.90

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Solution

The fourth proportional to 216,010.90, 323,973.15 and 103,690.90 is: 155,515.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,010.90 : 323,973.15 = 103,690.90 : x
  2. Step 2: Convert to fraction form
    216,010.90/323,973.15 = 103,690.90/x
  3. Step 3: Cross multiply
    216,010.90x = 323,973.15 × 103,690.90
  4. Step 4: Simplify right side
    216,010.90x = 33,593,067,499.34
  5. Step 5: Solve for x
    x = 33,593,067,499.34/216,010.90
  6. Step 6: Final answer
    x = 155,515.61

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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.