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Finding the Fourth Proportional to 543,379.20, 814,008.60 and 355,822.08

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Solution

The fourth proportional to 543,379.20, 814,008.60 and 355,822.08 is: 533,038.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,379.20 : 814,008.60 = 355,822.08 : x
  2. Step 2: Convert to fraction form
    543,379.20/814,008.60 = 355,822.08/x
  3. Step 3: Cross multiply
    543,379.20x = 814,008.60 × 355,822.08
  4. Step 4: Simplify right side
    543,379.20x = 289,642,233,189.89
  5. Step 5: Solve for x
    x = 289,642,233,189.89/543,379.20
  6. Step 6: Final answer
    x = 533,038.87

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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.