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Finding the Fourth Proportional to 251,412.37, 377,019.72 and 91,450.33

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Solution

The fourth proportional to 251,412.37, 377,019.72 and 91,450.33 is: 137,139.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,412.37 : 377,019.72 = 91,450.33 : x
  2. Step 2: Convert to fraction form
    251,412.37/377,019.72 = 91,450.33/x
  3. Step 3: Cross multiply
    251,412.37x = 377,019.72 × 91,450.33
  4. Step 4: Simplify right side
    251,412.37x = 34,478,575,925.41
  5. Step 5: Solve for x
    x = 34,478,575,925.41/251,412.37
  6. Step 6: Final answer
    x = 137,139.54

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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.