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Finding the Fourth Proportional to 371,548.08, 512,780.13 and 220,645.08

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Solution

The fourth proportional to 371,548.08, 512,780.13 and 220,645.08 is: 304,516.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,548.08 : 512,780.13 = 220,645.08 : x
  2. Step 2: Convert to fraction form
    371,548.08/512,780.13 = 220,645.08/x
  3. Step 3: Cross multiply
    371,548.08x = 512,780.13 × 220,645.08
  4. Step 4: Simplify right side
    371,548.08x = 113,142,412,806.26
  5. Step 5: Solve for x
    x = 113,142,412,806.26/371,548.08
  6. Step 6: Final answer
    x = 304,516.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.