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Finding the Fourth Proportional to 552,125.34, 761,940.80 and 310,394.41

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Solution

The fourth proportional to 552,125.34, 761,940.80 and 310,394.41 is: 428,348.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,125.34 : 761,940.80 = 310,394.41 : x
  2. Step 2: Convert to fraction form
    552,125.34/761,940.80 = 310,394.41/x
  3. Step 3: Cross multiply
    552,125.34x = 761,940.80 × 310,394.41
  4. Step 4: Simplify right side
    552,125.34x = 236,502,165,070.93
  5. Step 5: Solve for x
    x = 236,502,165,070.93/552,125.34
  6. Step 6: Final answer
    x = 428,348.69

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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.