Home / 314,936.20-472,404.30-128,081.80

Finding the Fourth Proportional to 314,936.20, 472,404.30 and 128,081.80

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Solution

The fourth proportional to 314,936.20, 472,404.30 and 128,081.80 is: 192,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,936.20 : 472,404.30 = 128,081.80 : x
  2. Step 2: Convert to fraction form
    314,936.20/472,404.30 = 128,081.80/x
  3. Step 3: Cross multiply
    314,936.20x = 472,404.30 × 128,081.80
  4. Step 4: Simplify right side
    314,936.20x = 60,506,393,071.74
  5. Step 5: Solve for x
    x = 60,506,393,071.74/314,936.20
  6. Step 6: Final answer
    x = 192,122.70

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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.