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Finding the Fourth Proportional to 553,890.96, 764,368.56 and 299,241.36

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Solution

The fourth proportional to 553,890.96, 764,368.56 and 299,241.36 is: 412,952.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,890.96 : 764,368.56 = 299,241.36 : x
  2. Step 2: Convert to fraction form
    553,890.96/764,368.56 = 299,241.36/x
  3. Step 3: Cross multiply
    553,890.96x = 764,368.56 × 299,241.36
  4. Step 4: Simplify right side
    553,890.96x = 228,730,687,435.64
  5. Step 5: Solve for x
    x = 228,730,687,435.64/553,890.96
  6. Step 6: Final answer
    x = 412,952.56

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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.