Home / 220,529.86-330,488.34-115,138.60

Finding the Fourth Proportional to 220,529.86, 330,488.34 and 115,138.60

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Solution

The fourth proportional to 220,529.86, 330,488.34 and 115,138.60 is: 172,547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,529.86 : 330,488.34 = 115,138.60 : x
  2. Step 2: Convert to fraction form
    220,529.86/330,488.34 = 115,138.60/x
  3. Step 3: Cross multiply
    220,529.86x = 330,488.34 × 115,138.60
  4. Step 4: Simplify right side
    220,529.86x = 38,051,964,783.92
  5. Step 5: Solve for x
    x = 38,051,964,783.92/220,529.86
  6. Step 6: Final answer
    x = 172,547.90

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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.