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Finding the Fourth Proportional to 393,650.05, 543,498.51 and 302,845.81

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Solution

The fourth proportional to 393,650.05, 543,498.51 and 302,845.81 is: 418,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,650.05 : 543,498.51 = 302,845.81 : x
  2. Step 2: Convert to fraction form
    393,650.05/543,498.51 = 302,845.81/x
  3. Step 3: Cross multiply
    393,650.05x = 543,498.51 × 302,845.81
  4. Step 4: Simplify right side
    393,650.05x = 164,596,246,494.74
  5. Step 5: Solve for x
    x = 164,596,246,494.74/393,650.05
  6. Step 6: Final answer
    x = 418,128.35

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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.