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Finding the Fourth Proportional to 389,627.63, 537,680.86 and 217,548.24

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Solution

The fourth proportional to 389,627.63, 537,680.86 and 217,548.24 is: 300,213.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,627.63 : 537,680.86 = 217,548.24 : x
  2. Step 2: Convert to fraction form
    389,627.63/537,680.86 = 217,548.24/x
  3. Step 3: Cross multiply
    389,627.63x = 537,680.86 × 217,548.24
  4. Step 4: Simplify right side
    389,627.63x = 116,971,524,774.69
  5. Step 5: Solve for x
    x = 116,971,524,774.69/389,627.63
  6. Step 6: Final answer
    x = 300,213.63

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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.