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Finding the Fourth Proportional to 510,086.40, 765,421.20 and 194,769.60

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Solution

The fourth proportional to 510,086.40, 765,421.20 and 194,769.60 is: 292,265.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,086.40 : 765,421.20 = 194,769.60 : x
  2. Step 2: Convert to fraction form
    510,086.40/765,421.20 = 194,769.60/x
  3. Step 3: Cross multiply
    510,086.40x = 765,421.20 × 194,769.60
  4. Step 4: Simplify right side
    510,086.40x = 149,080,780,955.52
  5. Step 5: Solve for x
    x = 149,080,780,955.52/510,086.40
  6. Step 6: Final answer
    x = 292,265.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.