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Finding the Fourth Proportional to 251,412.36, 377,019.72 and 91,450.32

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Solution

The fourth proportional to 251,412.36, 377,019.72 and 91,450.32 is: 137,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,412.36 : 377,019.72 = 91,450.32 : x
  2. Step 2: Convert to fraction form
    251,412.36/377,019.72 = 91,450.32/x
  3. Step 3: Cross multiply
    251,412.36x = 377,019.72 × 91,450.32
  4. Step 4: Simplify right side
    251,412.36x = 34,478,574,040.31
  5. Step 5: Solve for x
    x = 34,478,574,040.31/251,412.36
  6. Step 6: Final answer
    x = 137,139.53

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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.