Home / 217,582.20-326,406.24-77,307.48

Finding the Fourth Proportional to 217,582.20, 326,406.24 and 77,307.48

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Solution

The fourth proportional to 217,582.20, 326,406.24 and 77,307.48 is: 115,972.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,582.20 : 326,406.24 = 77,307.48 : x
  2. Step 2: Convert to fraction form
    217,582.20/326,406.24 = 77,307.48/x
  3. Step 3: Cross multiply
    217,582.20x = 326,406.24 × 77,307.48
  4. Step 4: Simplify right side
    217,582.20x = 25,233,643,870.68
  5. Step 5: Solve for x
    x = 25,233,643,870.68/217,582.20
  6. Step 6: Final answer
    x = 115,972.92

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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.