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Finding the Fourth Proportional to 505,573.28, 697,734.52 and 279,262.52

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Solution

The fourth proportional to 505,573.28, 697,734.52 and 279,262.52 is: 385,406.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,573.28 : 697,734.52 = 279,262.52 : x
  2. Step 2: Convert to fraction form
    505,573.28/697,734.52 = 279,262.52/x
  3. Step 3: Cross multiply
    505,573.28x = 697,734.52 × 279,262.52
  4. Step 4: Simplify right side
    505,573.28x = 194,851,100,346.19
  5. Step 5: Solve for x
    x = 194,851,100,346.19/505,573.28
  6. Step 6: Final answer
    x = 385,406.25

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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.