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Finding the Fourth Proportional to 561,871.62, 775,386.27 and 307,223.82

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Solution

The fourth proportional to 561,871.62, 775,386.27 and 307,223.82 is: 423,970.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,871.62 : 775,386.27 = 307,223.82 : x
  2. Step 2: Convert to fraction form
    561,871.62/775,386.27 = 307,223.82/x
  3. Step 3: Cross multiply
    561,871.62x = 775,386.27 × 307,223.82
  4. Step 4: Simplify right side
    561,871.62x = 238,217,131,844.95
  5. Step 5: Solve for x
    x = 238,217,131,844.95/561,871.62
  6. Step 6: Final answer
    x = 423,970.75

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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.