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Finding the Fourth Proportional to 386,338.64, 579,498.91 and 102,049.03

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Solution

The fourth proportional to 386,338.64, 579,498.91 and 102,049.03 is: 153,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,338.64 : 579,498.91 = 102,049.03 : x
  2. Step 2: Convert to fraction form
    386,338.64/579,498.91 = 102,049.03/x
  3. Step 3: Cross multiply
    386,338.64x = 579,498.91 × 102,049.03
  4. Step 4: Simplify right side
    386,338.64x = 59,137,298,754.06
  5. Step 5: Solve for x
    x = 59,137,298,754.06/386,338.64
  6. Step 6: Final answer
    x = 153,071.15

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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.