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Finding the Fourth Proportional to 211,323.60, 317,266.94 and 122,640.76

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Solution

The fourth proportional to 211,323.60, 317,266.94 and 122,640.76 is: 184,124.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,323.60 : 317,266.94 = 122,640.76 : x
  2. Step 2: Convert to fraction form
    211,323.60/317,266.94 = 122,640.76/x
  3. Step 3: Cross multiply
    211,323.60x = 317,266.94 × 122,640.76
  4. Step 4: Simplify right side
    211,323.60x = 38,909,858,644.47
  5. Step 5: Solve for x
    x = 38,909,858,644.47/211,323.60
  6. Step 6: Final answer
    x = 184,124.53

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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.