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Finding the Fourth Proportional to 502,029.02, 753,043.52 and 128,052.02

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Solution

The fourth proportional to 502,029.02, 753,043.52 and 128,052.02 is: 192,078.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,029.02 : 753,043.52 = 128,052.02 : x
  2. Step 2: Convert to fraction form
    502,029.02/753,043.52 = 128,052.02/x
  3. Step 3: Cross multiply
    502,029.02x = 753,043.52 × 128,052.02
  4. Step 4: Simplify right side
    502,029.02x = 96,428,743,883.91
  5. Step 5: Solve for x
    x = 96,428,743,883.91/502,029.02
  6. Step 6: Final answer
    x = 192,078.03

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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.