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Finding the Fourth Proportional to 216,342.84, 324,630.44 and 90,070.25

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Solution

The fourth proportional to 216,342.84, 324,630.44 and 90,070.25 is: 135,153.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,342.84 : 324,630.44 = 90,070.25 : x
  2. Step 2: Convert to fraction form
    216,342.84/324,630.44 = 90,070.25/x
  3. Step 3: Cross multiply
    216,342.84x = 324,630.44 × 90,070.25
  4. Step 4: Simplify right side
    216,342.84x = 29,239,542,814.91
  5. Step 5: Solve for x
    x = 29,239,542,814.91/216,342.84
  6. Step 6: Final answer
    x = 135,153.73

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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.