Home / 319,790.70-479,556.45-109,320.30

Finding the Fourth Proportional to 319,790.70, 479,556.45 and 109,320.30

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Solution

The fourth proportional to 319,790.70, 479,556.45 and 109,320.30 is: 163,936.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,790.70 : 479,556.45 = 109,320.30 : x
  2. Step 2: Convert to fraction form
    319,790.70/479,556.45 = 109,320.30/x
  3. Step 3: Cross multiply
    319,790.70x = 479,556.45 × 109,320.30
  4. Step 4: Simplify right side
    319,790.70x = 52,425,254,980.94
  5. Step 5: Solve for x
    x = 52,425,254,980.94/319,790.70
  6. Step 6: Final answer
    x = 163,936.15

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1.5x scale

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.