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Finding the Fourth Proportional to 531,266.57, 797,135.39 and 278,486.72

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Solution

The fourth proportional to 531,266.57, 797,135.39 and 278,486.72 is: 417,853.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,266.57 : 797,135.39 = 278,486.72 : x
  2. Step 2: Convert to fraction form
    531,266.57/797,135.39 = 278,486.72/x
  3. Step 3: Cross multiply
    531,266.57x = 797,135.39 × 278,486.72
  4. Step 4: Simplify right side
    531,266.57x = 221,991,620,157.02
  5. Step 5: Solve for x
    x = 221,991,620,157.02/531,266.57
  6. Step 6: Final answer
    x = 417,853.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.