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Finding the Fourth Proportional to 219,885.50, 329,811.69 and 70,119.74

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Solution

The fourth proportional to 219,885.50, 329,811.69 and 70,119.74 is: 105,174.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,885.50 : 329,811.69 = 70,119.74 : x
  2. Step 2: Convert to fraction form
    219,885.50/329,811.69 = 70,119.74/x
  3. Step 3: Cross multiply
    219,885.50x = 329,811.69 × 70,119.74
  4. Step 4: Simplify right side
    219,885.50x = 23,126,309,951.76
  5. Step 5: Solve for x
    x = 23,126,309,951.76/219,885.50
  6. Step 6: Final answer
    x = 105,174.33

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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.