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Finding the Fourth Proportional to 402,562.79, 603,843.79 and 103,042.89

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Solution

The fourth proportional to 402,562.79, 603,843.79 and 103,042.89 is: 154,564.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,562.79 : 603,843.79 = 103,042.89 : x
  2. Step 2: Convert to fraction form
    402,562.79/603,843.79 = 103,042.89/x
  3. Step 3: Cross multiply
    402,562.79x = 603,843.79 × 103,042.89
  4. Step 4: Simplify right side
    402,562.79x = 62,221,809,230.15
  5. Step 5: Solve for x
    x = 62,221,809,230.15/402,562.79
  6. Step 6: Final answer
    x = 154,564.23

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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.