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Finding the Fourth Proportional to 611,223.75, 916,627.98 and 211,771.26

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Solution

The fourth proportional to 611,223.75, 916,627.98 and 211,771.26 is: 317,584.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,223.75 : 916,627.98 = 211,771.26 : x
  2. Step 2: Convert to fraction form
    611,223.75/916,627.98 = 211,771.26/x
  3. Step 3: Cross multiply
    611,223.75x = 916,627.98 × 211,771.26
  4. Step 4: Simplify right side
    611,223.75x = 194,115,462,275.86
  5. Step 5: Solve for x
    x = 194,115,462,275.86/611,223.75
  6. Step 6: Final answer
    x = 317,584.95

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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.