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Finding the Fourth Proportional to 531,265.57, 797,133.89 and 278,485.72

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Solution

The fourth proportional to 531,265.57, 797,133.89 and 278,485.72 is: 417,852.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,265.57 : 797,133.89 = 278,485.72 : x
  2. Step 2: Convert to fraction form
    531,265.57/797,133.89 = 278,485.72/x
  3. Step 3: Cross multiply
    531,265.57x = 797,133.89 × 278,485.72
  4. Step 4: Simplify right side
    531,265.57x = 221,990,403,996.43
  5. Step 5: Solve for x
    x = 221,990,403,996.43/531,265.57
  6. Step 6: Final answer
    x = 417,852.05

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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.