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Finding the Fourth Proportional to 564,815.25, 779,450.51 and 310,171.91

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Solution

The fourth proportional to 564,815.25, 779,450.51 and 310,171.91 is: 428,040.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,815.25 : 779,450.51 = 310,171.91 : x
  2. Step 2: Convert to fraction form
    564,815.25/779,450.51 = 310,171.91/x
  3. Step 3: Cross multiply
    564,815.25x = 779,450.51 × 310,171.91
  4. Step 4: Simplify right side
    564,815.25x = 241,763,650,315.35
  5. Step 5: Solve for x
    x = 241,763,650,315.35/564,815.25
  6. Step 6: Final answer
    x = 428,040.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.