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Finding the Fourth Proportional to 389,419.66, 537,399.62 and 217,337.63

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Solution

The fourth proportional to 389,419.66, 537,399.62 and 217,337.63 is: 299,926.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,419.66 : 537,399.62 = 217,337.63 : x
  2. Step 2: Convert to fraction form
    389,419.66/537,399.62 = 217,337.63/x
  3. Step 3: Cross multiply
    389,419.66x = 537,399.62 × 217,337.63
  4. Step 4: Simplify right side
    389,419.66x = 116,797,157,630.05
  5. Step 5: Solve for x
    x = 116,797,157,630.05/389,419.66
  6. Step 6: Final answer
    x = 299,926.20

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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.