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Finding the Fourth Proportional to 165,215, 247,827.36 and 40,556

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Solution

The fourth proportional to 165,215, 247,827.36 and 40,556 is: 60,835.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,215 : 247,827.36 = 40,556 : x
  2. Step 2: Convert to fraction form
    165,215/247,827.36 = 40,556/x
  3. Step 3: Cross multiply
    165,215x = 247,827.36 × 40,556
  4. Step 4: Simplify right side
    165,215x = 10,050,886,412.16
  5. Step 5: Solve for x
    x = 10,050,886,412.16/165,215
  6. Step 6: Final answer
    x = 60,835.19

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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.