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Finding the Fourth Proportional to 219,019.19, 302,245.90 and 122,222.03

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Solution

The fourth proportional to 219,019.19, 302,245.90 and 122,222.03 is: 168,666.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,019.19 : 302,245.90 = 122,222.03 : x
  2. Step 2: Convert to fraction form
    219,019.19/302,245.90 = 122,222.03/x
  3. Step 3: Cross multiply
    219,019.19x = 302,245.90 × 122,222.03
  4. Step 4: Simplify right side
    219,019.19x = 36,941,105,640.39
  5. Step 5: Solve for x
    x = 36,941,105,640.39/219,019.19
  6. Step 6: Final answer
    x = 168,666.07

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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.