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Finding the Fourth Proportional to 251,574.61, 377,363.91 and 91,765.05

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Solution

The fourth proportional to 251,574.61, 377,363.91 and 91,765.05 is: 137,648.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,574.61 : 377,363.91 = 91,765.05 : x
  2. Step 2: Convert to fraction form
    251,574.61/377,363.91 = 91,765.05/x
  3. Step 3: Cross multiply
    251,574.61x = 377,363.91 × 91,765.05
  4. Step 4: Simplify right side
    251,574.61x = 34,628,819,121.02
  5. Step 5: Solve for x
    x = 34,628,819,121.02/251,574.61
  6. Step 6: Final answer
    x = 137,648.31

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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.