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Finding the Fourth Proportional to 551,163.45, 826,423.43 and 213,809.93

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Solution

The fourth proportional to 551,163.45, 826,423.43 and 213,809.93 is: 320,590.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,163.45 : 826,423.43 = 213,809.93 : x
  2. Step 2: Convert to fraction form
    551,163.45/826,423.43 = 213,809.93/x
  3. Step 3: Cross multiply
    551,163.45x = 826,423.43 × 213,809.93
  4. Step 4: Simplify right side
    551,163.45x = 176,697,533,616.58
  5. Step 5: Solve for x
    x = 176,697,533,616.58/551,163.45
  6. Step 6: Final answer
    x = 320,590.08

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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.