Home / 313,904.40-471,115.80-145,683.60

Finding the Fourth Proportional to 313,904.40, 471,115.80 and 145,683.60

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Solution

The fourth proportional to 313,904.40, 471,115.80 and 145,683.60 is: 218,645.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,904.40 : 471,115.80 = 145,683.60 : x
  2. Step 2: Convert to fraction form
    313,904.40/471,115.80 = 145,683.60/x
  3. Step 3: Cross multiply
    313,904.40x = 471,115.80 × 145,683.60
  4. Step 4: Simplify right side
    313,904.40x = 68,633,845,760.88
  5. Step 5: Solve for x
    x = 68,633,845,760.88/313,904.40
  6. Step 6: Final answer
    x = 218,645.70

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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.