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Finding the Fourth Proportional to 386,328.30, 579,492.45 and 366,645.30

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Solution

The fourth proportional to 386,328.30, 579,492.45 and 366,645.30 is: 549,967.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,328.30 : 579,492.45 = 366,645.30 : x
  2. Step 2: Convert to fraction form
    386,328.30/579,492.45 = 366,645.30/x
  3. Step 3: Cross multiply
    386,328.30x = 579,492.45 × 366,645.30
  4. Step 4: Simplify right side
    386,328.30x = 212,468,183,177.99
  5. Step 5: Solve for x
    x = 212,468,183,177.99/386,328.30
  6. Step 6: Final answer
    x = 549,967.95

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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.