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Finding the Fourth Proportional to 321,356.95, 443,613.85 and 224,939.47

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Solution

The fourth proportional to 321,356.95, 443,613.85 and 224,939.47 is: 310,515.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,356.95 : 443,613.85 = 224,939.47 : x
  2. Step 2: Convert to fraction form
    321,356.95/443,613.85 = 224,939.47/x
  3. Step 3: Cross multiply
    321,356.95x = 443,613.85 × 224,939.47
  4. Step 4: Simplify right side
    321,356.95x = 99,786,264,303.66
  5. Step 5: Solve for x
    x = 99,786,264,303.66/321,356.95
  6. Step 6: Final answer
    x = 310,515.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.