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Finding the Fourth Proportional to 611,177.40, 916,745.94 and 251,335.80

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Solution

The fourth proportional to 611,177.40, 916,745.94 and 251,335.80 is: 376,995.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,177.40 : 916,745.94 = 251,335.80 : x
  2. Step 2: Convert to fraction form
    611,177.40/916,745.94 = 251,335.80/x
  3. Step 3: Cross multiply
    611,177.40x = 916,745.94 × 251,335.80
  4. Step 4: Simplify right side
    611,177.40x = 230,411,074,226.65
  5. Step 5: Solve for x
    x = 230,411,074,226.65/611,177.40
  6. Step 6: Final answer
    x = 376,995.41

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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.