Home / 389,853.76-537,968.16-220,104.64

Finding the Fourth Proportional to 389,853.76, 537,968.16 and 220,104.64

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Solution

The fourth proportional to 389,853.76, 537,968.16 and 220,104.64 is: 303,727.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,853.76 : 537,968.16 = 220,104.64 : x
  2. Step 2: Convert to fraction form
    389,853.76/537,968.16 = 220,104.64/x
  3. Step 3: Cross multiply
    389,853.76x = 537,968.16 × 220,104.64
  4. Step 4: Simplify right side
    389,853.76x = 118,409,288,188.26
  5. Step 5: Solve for x
    x = 118,409,288,188.26/389,853.76
  6. Step 6: Final answer
    x = 303,727.45

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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.