Home / 320,281.32-480,429.18-109,921

Finding the Fourth Proportional to 320,281.32, 480,429.18 and 109,921

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Solution

The fourth proportional to 320,281.32, 480,429.18 and 109,921 is: 164,883.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,281.32 : 480,429.18 = 109,921 : x
  2. Step 2: Convert to fraction form
    320,281.32/480,429.18 = 109,921/x
  3. Step 3: Cross multiply
    320,281.32x = 480,429.18 × 109,921
  4. Step 4: Simplify right side
    320,281.32x = 52,809,255,894.78
  5. Step 5: Solve for x
    x = 52,809,255,894.78/320,281.32
  6. Step 6: Final answer
    x = 164,883.97

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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.