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Finding the Fourth Proportional to 447,537.63, 671,368.32 and 143,940.38

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Solution

The fourth proportional to 447,537.63, 671,368.32 and 143,940.38 is: 215,930.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,537.63 : 671,368.32 = 143,940.38 : x
  2. Step 2: Convert to fraction form
    447,537.63/671,368.32 = 143,940.38/x
  3. Step 3: Cross multiply
    447,537.63x = 671,368.32 × 143,940.38
  4. Step 4: Simplify right side
    447,537.63x = 96,637,011,100.76
  5. Step 5: Solve for x
    x = 96,637,011,100.76/447,537.63
  6. Step 6: Final answer
    x = 215,930.47

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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.