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Finding the Fourth Proportional to 251,774.36, 377,531.40 and 74,258.72

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Solution

The fourth proportional to 251,774.36, 377,531.40 and 74,258.72 is: 111,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,774.36 : 377,531.40 = 74,258.72 : x
  2. Step 2: Convert to fraction form
    251,774.36/377,531.40 = 74,258.72/x
  3. Step 3: Cross multiply
    251,774.36x = 377,531.40 × 74,258.72
  4. Step 4: Simplify right side
    251,774.36x = 28,034,998,523.81
  5. Step 5: Solve for x
    x = 28,034,998,523.81/251,774.36
  6. Step 6: Final answer
    x = 111,349.70

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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.