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Finding the Fourth Proportional to 661,520.36, 992,608.61 and 262,152.29

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Solution

The fourth proportional to 661,520.36, 992,608.61 and 262,152.29 is: 393,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,520.36 : 992,608.61 = 262,152.29 : x
  2. Step 2: Convert to fraction form
    661,520.36/992,608.61 = 262,152.29/x
  3. Step 3: Cross multiply
    661,520.36x = 992,608.61 × 262,152.29
  4. Step 4: Simplify right side
    661,520.36x = 260,214,621,355.98
  5. Step 5: Solve for x
    x = 260,214,621,355.98/661,520.36
  6. Step 6: Final answer
    x = 393,358.45

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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.