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Finding the Fourth Proportional to 251,676, 377,572.40 and 85,464.16

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Solution

The fourth proportional to 251,676, 377,572.40 and 85,464.16 is: 128,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,676 : 377,572.40 = 85,464.16 : x
  2. Step 2: Convert to fraction form
    251,676/377,572.40 = 85,464.16/x
  3. Step 3: Cross multiply
    251,676x = 377,572.40 × 85,464.16
  4. Step 4: Simplify right side
    251,676x = 32,268,908,005.18
  5. Step 5: Solve for x
    x = 32,268,908,005.18/251,676
  6. Step 6: Final answer
    x = 128,216.07

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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.