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Finding the Fourth Proportional to 386,026.72, 579,157.14 and 186,309.88

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Solution

The fourth proportional to 386,026.72, 579,157.14 and 186,309.88 is: 279,521.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,026.72 : 579,157.14 = 186,309.88 : x
  2. Step 2: Convert to fraction form
    386,026.72/579,157.14 = 186,309.88/x
  3. Step 3: Cross multiply
    386,026.72x = 579,157.14 × 186,309.88
  4. Step 4: Simplify right side
    386,026.72x = 107,902,697,254.54
  5. Step 5: Solve for x
    x = 107,902,697,254.54/386,026.72
  6. Step 6: Final answer
    x = 279,521.32

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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.