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Finding the Fourth Proportional to 421,562.73, 581,777.87 and 249,579.39

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Solution

The fourth proportional to 421,562.73, 581,777.87 and 249,579.39 is: 344,432.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,562.73 : 581,777.87 = 249,579.39 : x
  2. Step 2: Convert to fraction form
    421,562.73/581,777.87 = 249,579.39/x
  3. Step 3: Cross multiply
    421,562.73x = 581,777.87 × 249,579.39
  4. Step 4: Simplify right side
    421,562.73x = 145,199,764,662.20
  5. Step 5: Solve for x
    x = 145,199,764,662.20/421,562.73
  6. Step 6: Final answer
    x = 344,432.17

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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.