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Finding the Fourth Proportional to 447,611.02, 671,438.84 and 127,810.32

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Solution

The fourth proportional to 447,611.02, 671,438.84 and 127,810.32 is: 191,721.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,611.02 : 671,438.84 = 127,810.32 : x
  2. Step 2: Convert to fraction form
    447,611.02/671,438.84 = 127,810.32/x
  3. Step 3: Cross multiply
    447,611.02x = 671,438.84 × 127,810.32
  4. Step 4: Simplify right side
    447,611.02x = 85,816,813,000.83
  5. Step 5: Solve for x
    x = 85,816,813,000.83/447,611.02
  6. Step 6: Final answer
    x = 191,721.85

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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.