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Finding the Fourth Proportional to 419,841.48, 579,359.34 and 238,528.20

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Solution

The fourth proportional to 419,841.48, 579,359.34 and 238,528.20 is: 329,156.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,841.48 : 579,359.34 = 238,528.20 : x
  2. Step 2: Convert to fraction form
    419,841.48/579,359.34 = 238,528.20/x
  3. Step 3: Cross multiply
    419,841.48x = 579,359.34 × 238,528.20
  4. Step 4: Simplify right side
    419,841.48x = 138,193,540,523.39
  5. Step 5: Solve for x
    x = 138,193,540,523.39/419,841.48
  6. Step 6: Final answer
    x = 329,156.47

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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.