Home / 389,364.35-537,321.80-217,280.48

Finding the Fourth Proportional to 389,364.35, 537,321.80 and 217,280.48

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Solution

The fourth proportional to 389,364.35, 537,321.80 and 217,280.48 is: 299,846.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,364.35 : 537,321.80 = 217,280.48 : x
  2. Step 2: Convert to fraction form
    389,364.35/537,321.80 = 217,280.48/x
  3. Step 3: Cross multiply
    389,364.35x = 537,321.80 × 217,280.48
  4. Step 4: Simplify right side
    389,364.35x = 116,749,540,504.97
  5. Step 5: Solve for x
    x = 116,749,540,504.97/389,364.35
  6. Step 6: Final answer
    x = 299,846.51

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1.5x scale

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.