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Finding the Fourth Proportional to 400,356.60, 552,487.41 and 219,066.45

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Solution

The fourth proportional to 400,356.60, 552,487.41 and 219,066.45 is: 302,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,356.60 : 552,487.41 = 219,066.45 : x
  2. Step 2: Convert to fraction form
    400,356.60/552,487.41 = 219,066.45/x
  3. Step 3: Cross multiply
    400,356.60x = 552,487.41 × 219,066.45
  4. Step 4: Simplify right side
    400,356.60x = 121,031,455,578.40
  5. Step 5: Solve for x
    x = 121,031,455,578.40/400,356.60
  6. Step 6: Final answer
    x = 302,309.13

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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.