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Finding the Fourth Proportional to 505,383.12, 697,424.04 and 279,030.24

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Solution

The fourth proportional to 505,383.12, 697,424.04 and 279,030.24 is: 385,059.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,383.12 : 697,424.04 = 279,030.24 : x
  2. Step 2: Convert to fraction form
    505,383.12/697,424.04 = 279,030.24/x
  3. Step 3: Cross multiply
    505,383.12x = 697,424.04 × 279,030.24
  4. Step 4: Simplify right side
    505,383.12x = 194,602,397,262.97
  5. Step 5: Solve for x
    x = 194,602,397,262.97/505,383.12
  6. Step 6: Final answer
    x = 385,059.16

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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.