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Finding the Fourth Proportional to 393,645.86, 543,492.76 and 302,841.62

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Solution

The fourth proportional to 393,645.86, 543,492.76 and 302,841.62 is: 418,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,645.86 : 543,492.76 = 302,841.62 : x
  2. Step 2: Convert to fraction form
    393,645.86/543,492.76 = 302,841.62/x
  3. Step 3: Cross multiply
    393,645.86x = 543,492.76 × 302,841.62
  4. Step 4: Simplify right side
    393,645.86x = 164,592,230,012.51
  5. Step 5: Solve for x
    x = 164,592,230,012.51/393,645.86
  6. Step 6: Final answer
    x = 418,122.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.