Home / 313,946.40-471,178.80-145,725.60

Finding the Fourth Proportional to 313,946.40, 471,178.80 and 145,725.60

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Solution

The fourth proportional to 313,946.40, 471,178.80 and 145,725.60 is: 218,708.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,946.40 : 471,178.80 = 145,725.60 : x
  2. Step 2: Convert to fraction form
    313,946.40/471,178.80 = 145,725.60/x
  3. Step 3: Cross multiply
    313,946.40x = 471,178.80 × 145,725.60
  4. Step 4: Simplify right side
    313,946.40x = 68,662,813,337.28
  5. Step 5: Solve for x
    x = 68,662,813,337.28/313,946.40
  6. Step 6: Final answer
    x = 218,708.71

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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.