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Finding the Fourth Proportional to 399,241.32, 550,954.32 and 256,001.94

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Solution

The fourth proportional to 399,241.32, 550,954.32 and 256,001.94 is: 353,283.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,241.32 : 550,954.32 = 256,001.94 : x
  2. Step 2: Convert to fraction form
    399,241.32/550,954.32 = 256,001.94/x
  3. Step 3: Cross multiply
    399,241.32x = 550,954.32 × 256,001.94
  4. Step 4: Simplify right side
    399,241.32x = 141,045,374,771.38
  5. Step 5: Solve for x
    x = 141,045,374,771.38/399,241.32
  6. Step 6: Final answer
    x = 353,283.51

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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.