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Finding the Fourth Proportional to 555,915.80, 767,164.45 and 301,266.98

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Solution

The fourth proportional to 555,915.80, 767,164.45 and 301,266.98 is: 415,748.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,915.80 : 767,164.45 = 301,266.98 : x
  2. Step 2: Convert to fraction form
    555,915.80/767,164.45 = 301,266.98/x
  3. Step 3: Cross multiply
    555,915.80x = 767,164.45 × 301,266.98
  4. Step 4: Simplify right side
    555,915.80x = 231,121,317,014.86
  5. Step 5: Solve for x
    x = 231,121,317,014.86/555,915.80
  6. Step 6: Final answer
    x = 415,748.78

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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.