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Finding the Fourth Proportional to 220,528.81, 330,902.52 and 87,406.12

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Solution

The fourth proportional to 220,528.81, 330,902.52 and 87,406.12 is: 131,152.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,528.81 : 330,902.52 = 87,406.12 : x
  2. Step 2: Convert to fraction form
    220,528.81/330,902.52 = 87,406.12/x
  3. Step 3: Cross multiply
    220,528.81x = 330,902.52 × 87,406.12
  4. Step 4: Simplify right side
    220,528.81x = 28,922,905,371.42
  5. Step 5: Solve for x
    x = 28,922,905,371.42/220,528.81
  6. Step 6: Final answer
    x = 131,152.50

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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.