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Finding the Fourth Proportional to 561,788.16, 842,556.69 and 162,339.90

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Solution

The fourth proportional to 561,788.16, 842,556.69 and 162,339.90 is: 243,473.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,788.16 : 842,556.69 = 162,339.90 : x
  2. Step 2: Convert to fraction form
    561,788.16/842,556.69 = 162,339.90/x
  3. Step 3: Cross multiply
    561,788.16x = 842,556.69 × 162,339.90
  4. Step 4: Simplify right side
    561,788.16x = 136,780,568,798.93
  5. Step 5: Solve for x
    x = 136,780,568,798.93/561,788.16
  6. Step 6: Final answer
    x = 243,473.57

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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.