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Finding the Fourth Proportional to 443,590.80, 665,386.20 and 364,858.80

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Solution

The fourth proportional to 443,590.80, 665,386.20 and 364,858.80 is: 547,288.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,590.80 : 665,386.20 = 364,858.80 : x
  2. Step 2: Convert to fraction form
    443,590.80/665,386.20 = 364,858.80/x
  3. Step 3: Cross multiply
    443,590.80x = 665,386.20 × 364,858.80
  4. Step 4: Simplify right side
    443,590.80x = 242,772,010,468.56
  5. Step 5: Solve for x
    x = 242,772,010,468.56/443,590.80
  6. Step 6: Final answer
    x = 547,288.20

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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.