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Finding the Fourth Proportional to 251,585.64, 377,301.60 and 71,685.72

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Solution

The fourth proportional to 251,585.64, 377,301.60 and 71,685.72 is: 107,506.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,585.64 : 377,301.60 = 71,685.72 : x
  2. Step 2: Convert to fraction form
    251,585.64/377,301.60 = 71,685.72/x
  3. Step 3: Cross multiply
    251,585.64x = 377,301.60 × 71,685.72
  4. Step 4: Simplify right side
    251,585.64x = 27,047,136,853.15
  5. Step 5: Solve for x
    x = 27,047,136,853.15/251,585.64
  6. Step 6: Final answer
    x = 107,506.68

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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.