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Finding the Fourth Proportional to 518,656.98, 777,798.42 and 219,160.76

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Solution

The fourth proportional to 518,656.98, 777,798.42 and 219,160.76 is: 328,662.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,656.98 : 777,798.42 = 219,160.76 : x
  2. Step 2: Convert to fraction form
    518,656.98/777,798.42 = 219,160.76/x
  3. Step 3: Cross multiply
    518,656.98x = 777,798.42 × 219,160.76
  4. Step 4: Simplify right side
    518,656.98x = 170,462,892,854.00
  5. Step 5: Solve for x
    x = 170,462,892,854.00/518,656.98
  6. Step 6: Final answer
    x = 328,662.10

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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.