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Finding the Fourth Proportional to 447,506.15, 671,192.56 and 147,988.30

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Solution

The fourth proportional to 447,506.15, 671,192.56 and 147,988.30 is: 221,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,506.15 : 671,192.56 = 147,988.30 : x
  2. Step 2: Convert to fraction form
    447,506.15/671,192.56 = 147,988.30/x
  3. Step 3: Cross multiply
    447,506.15x = 671,192.56 × 147,988.30
  4. Step 4: Simplify right side
    447,506.15x = 99,328,645,927.05
  5. Step 5: Solve for x
    x = 99,328,645,927.05/447,506.15
  6. Step 6: Final answer
    x = 221,960.40

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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.