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Finding the Fourth Proportional to 551,968.67, 761,738.38 and 310,250.50

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Solution

The fourth proportional to 551,968.67, 761,738.38 and 310,250.50 is: 428,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,968.67 : 761,738.38 = 310,250.50 : x
  2. Step 2: Convert to fraction form
    551,968.67/761,738.38 = 310,250.50/x
  3. Step 3: Cross multiply
    551,968.67x = 761,738.38 × 310,250.50
  4. Step 4: Simplify right side
    551,968.67x = 236,329,710,584.22
  5. Step 5: Solve for x
    x = 236,329,710,584.22/551,968.67
  6. Step 6: Final answer
    x = 428,157.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.