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Finding the Fourth Proportional to 389,447.42, 537,233.12 and 338,345.33

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Solution

The fourth proportional to 389,447.42, 537,233.12 and 338,345.33 is: 466,739.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,447.42 : 537,233.12 = 338,345.33 : x
  2. Step 2: Convert to fraction form
    389,447.42/537,233.12 = 338,345.33/x
  3. Step 3: Cross multiply
    389,447.42x = 537,233.12 × 338,345.33
  4. Step 4: Simplify right side
    389,447.42x = 181,770,312,895.44
  5. Step 5: Solve for x
    x = 181,770,312,895.44/389,447.42
  6. Step 6: Final answer
    x = 466,739.04

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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.