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Finding the Fourth Proportional to 251,720.61, 377,539.63 and 69,308.87

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Solution

The fourth proportional to 251,720.61, 377,539.63 and 69,308.87 is: 103,951.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,720.61 : 377,539.63 = 69,308.87 : x
  2. Step 2: Convert to fraction form
    251,720.61/377,539.63 = 69,308.87/x
  3. Step 3: Cross multiply
    251,720.61x = 377,539.63 × 69,308.87
  4. Step 4: Simplify right side
    251,720.61x = 26,166,845,135.52
  5. Step 5: Solve for x
    x = 26,166,845,135.52/251,720.61
  6. Step 6: Final answer
    x = 103,951.94

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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.