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Finding the Fourth Proportional to 221,988.37, 332,927.13 and 87,079.86

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Solution

The fourth proportional to 221,988.37, 332,927.13 and 87,079.86 is: 130,598.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,988.37 : 332,927.13 = 87,079.86 : x
  2. Step 2: Convert to fraction form
    221,988.37/332,927.13 = 87,079.86/x
  3. Step 3: Cross multiply
    221,988.37x = 332,927.13 × 87,079.86
  4. Step 4: Simplify right side
    221,988.37x = 28,991,247,870.60
  5. Step 5: Solve for x
    x = 28,991,247,870.60/221,988.37
  6. Step 6: Final answer
    x = 130,598.05

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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.