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Finding the Fourth Proportional to 386,399.61, 532,615.34 and 304,594.45

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Solution

The fourth proportional to 386,399.61, 532,615.34 and 304,594.45 is: 419,854.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,399.61 : 532,615.34 = 304,594.45 : x
  2. Step 2: Convert to fraction form
    386,399.61/532,615.34 = 304,594.45/x
  3. Step 3: Cross multiply
    386,399.61x = 532,615.34 × 304,594.45
  4. Step 4: Simplify right side
    386,399.61x = 162,231,675,978.81
  5. Step 5: Solve for x
    x = 162,231,675,978.81/386,399.61
  6. Step 6: Final answer
    x = 419,854.66

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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.