Home / 389,839.76-537,948.84-220,090.64

Finding the Fourth Proportional to 389,839.76, 537,948.84 and 220,090.64

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Solution

The fourth proportional to 389,839.76, 537,948.84 and 220,090.64 is: 303,708.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,839.76 : 537,948.84 = 220,090.64 : x
  2. Step 2: Convert to fraction form
    389,839.76/537,948.84 = 220,090.64/x
  3. Step 3: Cross multiply
    389,839.76x = 537,948.84 × 220,090.64
  4. Step 4: Simplify right side
    389,839.76x = 118,397,504,482.86
  5. Step 5: Solve for x
    x = 118,397,504,482.86/389,839.76
  6. Step 6: Final answer
    x = 303,708.13

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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.