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Finding the Fourth Proportional to 318,218.93, 439,032.84 and 197,316.71

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Solution

The fourth proportional to 318,218.93, 439,032.84 and 197,316.71 is: 272,229.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,218.93 : 439,032.84 = 197,316.71 : x
  2. Step 2: Convert to fraction form
    318,218.93/439,032.84 = 197,316.71/x
  3. Step 3: Cross multiply
    318,218.93x = 439,032.84 × 197,316.71
  4. Step 4: Simplify right side
    318,218.93x = 86,628,513,375.59
  5. Step 5: Solve for x
    x = 86,628,513,375.59/318,218.93
  6. Step 6: Final answer
    x = 272,229.29

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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.