Home / 345,785.90-477,169.79-255,109.23

Finding the Fourth Proportional to 345,785.90, 477,169.79 and 255,109.23

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Solution

The fourth proportional to 345,785.90, 477,169.79 and 255,109.23 is: 352,039.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,785.90 : 477,169.79 = 255,109.23 : x
  2. Step 2: Convert to fraction form
    345,785.90/477,169.79 = 255,109.23/x
  3. Step 3: Cross multiply
    345,785.90x = 477,169.79 × 255,109.23
  4. Step 4: Simplify right side
    345,785.90x = 121,730,416,430.62
  5. Step 5: Solve for x
    x = 121,730,416,430.62/345,785.90
  6. Step 6: Final answer
    x = 352,039.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.