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Finding the Fourth Proportional to 518,865.02, 778,199.11 and 219,554.63

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Solution

The fourth proportional to 518,865.02, 778,199.11 and 219,554.63 is: 329,290.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,865.02 : 778,199.11 = 219,554.63 : x
  2. Step 2: Convert to fraction form
    518,865.02/778,199.11 = 219,554.63/x
  3. Step 3: Cross multiply
    518,865.02x = 778,199.11 × 219,554.63
  4. Step 4: Simplify right side
    518,865.02x = 170,857,213,222.50
  5. Step 5: Solve for x
    x = 170,857,213,222.50/518,865.02
  6. Step 6: Final answer
    x = 329,290.29

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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.