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Finding the Fourth Proportional to 429,636.03, 644,276.66 and 186,492.66

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Solution

The fourth proportional to 429,636.03, 644,276.66 and 186,492.66 is: 279,661.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,636.03 : 644,276.66 = 186,492.66 : x
  2. Step 2: Convert to fraction form
    429,636.03/644,276.66 = 186,492.66/x
  3. Step 3: Cross multiply
    429,636.03x = 644,276.66 × 186,492.66
  4. Step 4: Simplify right side
    429,636.03x = 120,152,867,166.85
  5. Step 5: Solve for x
    x = 120,152,867,166.85/429,636.03
  6. Step 6: Final answer
    x = 279,661.99

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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.