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Finding the Fourth Proportional to 398,314.48, 549,667.56 and 217,028.80

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Solution

The fourth proportional to 398,314.48, 549,667.56 and 217,028.80 is: 299,496.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,314.48 : 549,667.56 = 217,028.80 : x
  2. Step 2: Convert to fraction form
    398,314.48/549,667.56 = 217,028.80/x
  3. Step 3: Cross multiply
    398,314.48x = 549,667.56 × 217,028.80
  4. Step 4: Simplify right side
    398,314.48x = 119,293,690,945.73
  5. Step 5: Solve for x
    x = 119,293,690,945.73/398,314.48
  6. Step 6: Final answer
    x = 299,496.24

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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.