Home / 345,905.92-477,315.20-255,311.36

Finding the Fourth Proportional to 345,905.92, 477,315.20 and 255,311.36

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Solution

The fourth proportional to 345,905.92, 477,315.20 and 255,311.36 is: 352,303.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,905.92 : 477,315.20 = 255,311.36 : x
  2. Step 2: Convert to fraction form
    345,905.92/477,315.20 = 255,311.36/x
  3. Step 3: Cross multiply
    345,905.92x = 477,315.20 × 255,311.36
  4. Step 4: Simplify right side
    345,905.92x = 121,863,992,860.67
  5. Step 5: Solve for x
    x = 121,863,992,860.67/345,905.92
  6. Step 6: Final answer
    x = 352,303.87

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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.