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Finding the Fourth Proportional to 518,962.43, 778,548.71 and 219,442.52

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Solution

The fourth proportional to 518,962.43, 778,548.71 and 219,442.52 is: 329,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,962.43 : 778,548.71 = 219,442.52 : x
  2. Step 2: Convert to fraction form
    518,962.43/778,548.71 = 219,442.52/x
  3. Step 3: Cross multiply
    518,962.43x = 778,548.71 × 219,442.52
  4. Step 4: Simplify right side
    518,962.43x = 170,846,685,875.19
  5. Step 5: Solve for x
    x = 170,846,685,875.19/518,962.43
  6. Step 6: Final answer
    x = 329,208.20

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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.