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Finding the Fourth Proportional to 219,019.94, 302,246.94 and 122,222.78

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Solution

The fourth proportional to 219,019.94, 302,246.94 and 122,222.78 is: 168,667.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,019.94 : 302,246.94 = 122,222.78 : x
  2. Step 2: Convert to fraction form
    219,019.94/302,246.94 = 122,222.78/x
  3. Step 3: Cross multiply
    219,019.94x = 302,246.94 × 122,222.78
  4. Step 4: Simplify right side
    219,019.94x = 36,941,459,742.06
  5. Step 5: Solve for x
    x = 36,941,459,742.06/219,019.94
  6. Step 6: Final answer
    x = 168,667.11

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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.