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Finding the Fourth Proportional to 219,320.22, 302,659.29 and 123,830.94

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Solution

The fourth proportional to 219,320.22, 302,659.29 and 123,830.94 is: 170,885.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,320.22 : 302,659.29 = 123,830.94 : x
  2. Step 2: Convert to fraction form
    219,320.22/302,659.29 = 123,830.94/x
  3. Step 3: Cross multiply
    219,320.22x = 302,659.29 × 123,830.94
  4. Step 4: Simplify right side
    219,320.22x = 37,478,584,380.43
  5. Step 5: Solve for x
    x = 37,478,584,380.43/219,320.22
  6. Step 6: Final answer
    x = 170,885.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.