Home / 211,285.70-317,256.60-122,712.20

Finding the Fourth Proportional to 211,285.70, 317,256.60 and 122,712.20

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Solution

The fourth proportional to 211,285.70, 317,256.60 and 122,712.20 is: 184,258.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,285.70 : 317,256.60 = 122,712.20 : x
  2. Step 2: Convert to fraction form
    211,285.70/317,256.60 = 122,712.20/x
  3. Step 3: Cross multiply
    211,285.70x = 317,256.60 × 122,712.20
  4. Step 4: Simplify right side
    211,285.70x = 38,931,255,350.52
  5. Step 5: Solve for x
    x = 38,931,255,350.52/211,285.70
  6. Step 6: Final answer
    x = 184,258.83

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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.