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Finding the Fourth Proportional to 382,897.02, 528,392.66 and 213,131.28

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Solution

The fourth proportional to 382,897.02, 528,392.66 and 213,131.28 is: 294,118.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,897.02 : 528,392.66 = 213,131.28 : x
  2. Step 2: Convert to fraction form
    382,897.02/528,392.66 = 213,131.28/x
  3. Step 3: Cross multiply
    382,897.02x = 528,392.66 × 213,131.28
  4. Step 4: Simplify right side
    382,897.02x = 112,617,002,902.75
  5. Step 5: Solve for x
    x = 112,617,002,902.75/382,897.02
  6. Step 6: Final answer
    x = 294,118.25

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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.