Home / 320,128.94-480,193.42-109,768.70

Finding the Fourth Proportional to 320,128.94, 480,193.42 and 109,768.70

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Solution

The fourth proportional to 320,128.94, 480,193.42 and 109,768.70 is: 164,653.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,128.94 : 480,193.42 = 109,768.70 : x
  2. Step 2: Convert to fraction form
    320,128.94/480,193.42 = 109,768.70/x
  3. Step 3: Cross multiply
    320,128.94x = 480,193.42 × 109,768.70
  4. Step 4: Simplify right side
    320,128.94x = 52,710,207,461.95
  5. Step 5: Solve for x
    x = 52,710,207,461.95/320,128.94
  6. Step 6: Final answer
    x = 164,653.05

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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.