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Finding the Fourth Proportional to 371,992.88, 513,397.66 and 219,045.30

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Solution

The fourth proportional to 371,992.88, 513,397.66 and 219,045.30 is: 302,310.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,992.88 : 513,397.66 = 219,045.30 : x
  2. Step 2: Convert to fraction form
    371,992.88/513,397.66 = 219,045.30/x
  3. Step 3: Cross multiply
    371,992.88x = 513,397.66 × 219,045.30
  4. Step 4: Simplify right side
    371,992.88x = 112,457,344,454.00
  5. Step 5: Solve for x
    x = 112,457,344,454.00/371,992.88
  6. Step 6: Final answer
    x = 302,310.48

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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.