Home / 313,939.40-471,168.30-145,718.60

Finding the Fourth Proportional to 313,939.40, 471,168.30 and 145,718.60

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Solution

The fourth proportional to 313,939.40, 471,168.30 and 145,718.60 is: 218,698.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,939.40 : 471,168.30 = 145,718.60 : x
  2. Step 2: Convert to fraction form
    313,939.40/471,168.30 = 145,718.60/x
  3. Step 3: Cross multiply
    313,939.40x = 471,168.30 × 145,718.60
  4. Step 4: Simplify right side
    313,939.40x = 68,657,985,040.38
  5. Step 5: Solve for x
    x = 68,657,985,040.38/313,939.40
  6. Step 6: Final answer
    x = 218,698.21

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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.