Home / 209,678.47-314,255.26-165,129.28

Finding the Fourth Proportional to 209,678.47, 314,255.26 and 165,129.28

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Solution

The fourth proportional to 209,678.47, 314,255.26 and 165,129.28 is: 247,487.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,678.47 : 314,255.26 = 165,129.28 : x
  2. Step 2: Convert to fraction form
    209,678.47/314,255.26 = 165,129.28/x
  3. Step 3: Cross multiply
    209,678.47x = 314,255.26 × 165,129.28
  4. Step 4: Simplify right side
    209,678.47x = 51,892,742,423.09
  5. Step 5: Solve for x
    x = 51,892,742,423.09/209,678.47
  6. Step 6: Final answer
    x = 247,487.23

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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.