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Finding the Fourth Proportional to 661,301.08, 992,232.45 and 361,431.32

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Solution

The fourth proportional to 661,301.08, 992,232.45 and 361,431.32 is: 542,300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,301.08 : 992,232.45 = 361,431.32 : x
  2. Step 2: Convert to fraction form
    661,301.08/992,232.45 = 361,431.32/x
  3. Step 3: Cross multiply
    661,301.08x = 992,232.45 × 361,431.32
  4. Step 4: Simplify right side
    661,301.08x = 358,623,879,189.17
  5. Step 5: Solve for x
    x = 358,623,879,189.17/661,301.08
  6. Step 6: Final answer
    x = 542,300.46

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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.