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Finding the Fourth Proportional to 661,516.86, 992,603.34 and 262,148.79

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Solution

The fourth proportional to 661,516.86, 992,603.34 and 262,148.79 is: 393,353.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,516.86 : 992,603.34 = 262,148.79 : x
  2. Step 2: Convert to fraction form
    661,516.86/992,603.34 = 262,148.79/x
  3. Step 3: Cross multiply
    661,516.86x = 992,603.34 × 262,148.79
  4. Step 4: Simplify right side
    661,516.86x = 260,209,764,530.96
  5. Step 5: Solve for x
    x = 260,209,764,530.96/661,516.86
  6. Step 6: Final answer
    x = 393,353.19

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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.