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Finding the Fourth Proportional to 398,568.48, 549,996.93 and 224,164.80

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Solution

The fourth proportional to 398,568.48, 549,996.93 and 224,164.80 is: 309,331.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,568.48 : 549,996.93 = 224,164.80 : x
  2. Step 2: Convert to fraction form
    398,568.48/549,996.93 = 224,164.80/x
  3. Step 3: Cross multiply
    398,568.48x = 549,996.93 × 224,164.80
  4. Step 4: Simplify right side
    398,568.48x = 123,289,951,814.06
  5. Step 5: Solve for x
    x = 123,289,951,814.06/398,568.48
  6. Step 6: Final answer
    x = 309,331.92

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1.5x scale

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.