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Finding the Fourth Proportional to 552,308.18, 762,212.85 and 310,666.82

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Solution

The fourth proportional to 552,308.18, 762,212.85 and 310,666.82 is: 428,735.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,308.18 : 762,212.85 = 310,666.82 : x
  2. Step 2: Convert to fraction form
    552,308.18/762,212.85 = 310,666.82/x
  3. Step 3: Cross multiply
    552,308.18x = 762,212.85 × 310,666.82
  4. Step 4: Simplify right side
    552,308.18x = 236,794,242,272.64
  5. Step 5: Solve for x
    x = 236,794,242,272.64/552,308.18
  6. Step 6: Final answer
    x = 428,735.71

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1.5x scale

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.