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Finding the Fourth Proportional to 405,530.78, 608,330.78 and 106,010.88

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Solution

The fourth proportional to 405,530.78, 608,330.78 and 106,010.88 is: 159,025.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,530.78 : 608,330.78 = 106,010.88 : x
  2. Step 2: Convert to fraction form
    405,530.78/608,330.78 = 106,010.88/x
  3. Step 3: Cross multiply
    405,530.78x = 608,330.78 × 106,010.88
  4. Step 4: Simplify right side
    405,530.78x = 64,489,680,788.83
  5. Step 5: Solve for x
    x = 64,489,680,788.83/405,530.78
  6. Step 6: Final answer
    x = 159,025.37

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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.