Home / 217,929.20-326,776.80-77,669.60

Finding the Fourth Proportional to 217,929.20, 326,776.80 and 77,669.60

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Solution

The fourth proportional to 217,929.20, 326,776.80 and 77,669.60 is: 116,462.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,929.20 : 326,776.80 = 77,669.60 : x
  2. Step 2: Convert to fraction form
    217,929.20/326,776.80 = 77,669.60/x
  3. Step 3: Cross multiply
    217,929.20x = 326,776.80 × 77,669.60
  4. Step 4: Simplify right side
    217,929.20x = 25,380,623,345.28
  5. Step 5: Solve for x
    x = 25,380,623,345.28/217,929.20
  6. Step 6: Final answer
    x = 116,462.70

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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.