Home / 389,841.26-537,982.80-217,766.47

Finding the Fourth Proportional to 389,841.26, 537,982.80 and 217,766.47

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Solution

The fourth proportional to 389,841.26, 537,982.80 and 217,766.47 is: 300,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,841.26 : 537,982.80 = 217,766.47 : x
  2. Step 2: Convert to fraction form
    389,841.26/537,982.80 = 217,766.47/x
  3. Step 3: Cross multiply
    389,841.26x = 537,982.80 × 217,766.47
  4. Step 4: Simplify right side
    389,841.26x = 117,154,615,799.09
  5. Step 5: Solve for x
    x = 117,154,615,799.09/389,841.26
  6. Step 6: Final answer
    x = 300,518.77

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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.