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Finding the Fourth Proportional to 400,881.38, 553,225.23 and 228,795.89

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Solution

The fourth proportional to 400,881.38, 553,225.23 and 228,795.89 is: 315,743.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,881.38 : 553,225.23 = 228,795.89 : x
  2. Step 2: Convert to fraction form
    400,881.38/553,225.23 = 228,795.89/x
  3. Step 3: Cross multiply
    400,881.38x = 553,225.23 × 228,795.89
  4. Step 4: Simplify right side
    400,881.38x = 126,575,656,102.18
  5. Step 5: Solve for x
    x = 126,575,656,102.18/400,881.38
  6. Step 6: Final answer
    x = 315,743.42

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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.