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Finding the Fourth Proportional to 448,109.87, 671,836.73 and 211,323.38

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Solution

The fourth proportional to 448,109.87, 671,836.73 and 211,323.38 is: 316,830.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,109.87 : 671,836.73 = 211,323.38 : x
  2. Step 2: Convert to fraction form
    448,109.87/671,836.73 = 211,323.38/x
  3. Step 3: Cross multiply
    448,109.87x = 671,836.73 × 211,323.38
  4. Step 4: Simplify right side
    448,109.87x = 141,974,804,175.95
  5. Step 5: Solve for x
    x = 141,974,804,175.95/448,109.87
  6. Step 6: Final answer
    x = 316,830.35

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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.