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Finding the Fourth Proportional to 220,532.40, 330,701.40 and 87,368.40

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Solution

The fourth proportional to 220,532.40, 330,701.40 and 87,368.40 is: 131,014.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,532.40 : 330,701.40 = 87,368.40 : x
  2. Step 2: Convert to fraction form
    220,532.40/330,701.40 = 87,368.40/x
  3. Step 3: Cross multiply
    220,532.40x = 330,701.40 × 87,368.40
  4. Step 4: Simplify right side
    220,532.40x = 28,892,852,195.76
  5. Step 5: Solve for x
    x = 28,892,852,195.76/220,532.40
  6. Step 6: Final answer
    x = 131,014.09

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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.