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Finding the Fourth Proportional to 401,066.94, 553,418.20 and 228,973.96

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Solution

The fourth proportional to 401,066.94, 553,418.20 and 228,973.96 is: 315,953.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,066.94 : 553,418.20 = 228,973.96 : x
  2. Step 2: Convert to fraction form
    401,066.94/553,418.20 = 228,973.96/x
  3. Step 3: Cross multiply
    401,066.94x = 553,418.20 × 228,973.96
  4. Step 4: Simplify right side
    401,066.94x = 126,718,355,978.96
  5. Step 5: Solve for x
    x = 126,718,355,978.96/401,066.94
  6. Step 6: Final answer
    x = 315,953.14

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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.