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Finding the Fourth Proportional to 251,719.61, 377,538.13 and 69,307.87

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Solution

The fourth proportional to 251,719.61, 377,538.13 and 69,307.87 is: 103,950.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,719.61 : 377,538.13 = 69,307.87 : x
  2. Step 2: Convert to fraction form
    251,719.61/377,538.13 = 69,307.87/x
  3. Step 3: Cross multiply
    251,719.61x = 377,538.13 × 69,307.87
  4. Step 4: Simplify right side
    251,719.61x = 26,166,362,516.97
  5. Step 5: Solve for x
    x = 26,166,362,516.97/251,719.61
  6. Step 6: Final answer
    x = 103,950.43

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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.