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Finding the Fourth Proportional to 143,276.70, 214,915.05 and 36,660.45

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Solution

The fourth proportional to 143,276.70, 214,915.05 and 36,660.45 is: 54,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,276.70 : 214,915.05 = 36,660.45 : x
  2. Step 2: Convert to fraction form
    143,276.70/214,915.05 = 36,660.45/x
  3. Step 3: Cross multiply
    143,276.70x = 214,915.05 × 36,660.45
  4. Step 4: Simplify right side
    143,276.70x = 7,878,882,444.77
  5. Step 5: Solve for x
    x = 7,878,882,444.77/143,276.70
  6. Step 6: Final answer
    x = 54,990.68

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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.