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Finding the Fourth Proportional to 386,334.30, 579,501.45 and 366,651.30

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Solution

The fourth proportional to 386,334.30, 579,501.45 and 366,651.30 is: 549,976.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,334.30 : 579,501.45 = 366,651.30 : x
  2. Step 2: Convert to fraction form
    386,334.30/579,501.45 = 366,651.30/x
  3. Step 3: Cross multiply
    386,334.30x = 579,501.45 × 366,651.30
  4. Step 4: Simplify right side
    386,334.30x = 212,474,959,994.39
  5. Step 5: Solve for x
    x = 212,474,959,994.39/386,334.30
  6. Step 6: Final answer
    x = 549,976.95

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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.