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Finding the Fourth Proportional to 214,197.64, 321,356.66 and 79,259.72

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Solution

The fourth proportional to 214,197.64, 321,356.66 and 79,259.72 is: 118,911.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,197.64 : 321,356.66 = 79,259.72 : x
  2. Step 2: Convert to fraction form
    214,197.64/321,356.66 = 79,259.72/x
  3. Step 3: Cross multiply
    214,197.64x = 321,356.66 × 79,259.72
  4. Step 4: Simplify right side
    214,197.64x = 25,470,638,891.74
  5. Step 5: Solve for x
    x = 25,470,638,891.74/214,197.64
  6. Step 6: Final answer
    x = 118,911.86

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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.