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Finding the Fourth Proportional to 447,018.35, 670,166.46 and 147,311.87

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Solution

The fourth proportional to 447,018.35, 670,166.46 and 147,311.87 is: 220,848.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,018.35 : 670,166.46 = 147,311.87 : x
  2. Step 2: Convert to fraction form
    447,018.35/670,166.46 = 147,311.87/x
  3. Step 3: Cross multiply
    447,018.35x = 670,166.46 × 147,311.87
  4. Step 4: Simplify right side
    447,018.35x = 98,723,474,148.59
  5. Step 5: Solve for x
    x = 98,723,474,148.59/447,018.35
  6. Step 6: Final answer
    x = 220,848.82

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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.