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Finding the Fourth Proportional to 661,622.40, 992,822.40 and 240,940.80

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Solution

The fourth proportional to 661,622.40, 992,822.40 and 240,940.80 is: 361,552.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,622.40 : 992,822.40 = 240,940.80 : x
  2. Step 2: Convert to fraction form
    661,622.40/992,822.40 = 240,940.80/x
  3. Step 3: Cross multiply
    661,622.40x = 992,822.40 × 240,940.80
  4. Step 4: Simplify right side
    661,622.40x = 239,211,423,313.92
  5. Step 5: Solve for x
    x = 239,211,423,313.92/661,622.40
  6. Step 6: Final answer
    x = 361,552.79

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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.