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Finding the Fourth Proportional to 611,225.76, 916,630.98 and 211,773.26

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Solution

The fourth proportional to 611,225.76, 916,630.98 and 211,773.26 is: 317,587.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,225.76 : 916,630.98 = 211,773.26 : x
  2. Step 2: Convert to fraction form
    611,225.76/916,630.98 = 211,773.26/x
  3. Step 3: Cross multiply
    611,225.76x = 916,630.98 × 211,773.26
  4. Step 4: Simplify right side
    611,225.76x = 194,117,930,851.60
  5. Step 5: Solve for x
    x = 194,117,930,851.60/611,225.76
  6. Step 6: Final answer
    x = 317,587.94

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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.