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Finding the Fourth Proportional to 401,248.89, 553,780.50 and 248,336.33

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Solution

The fourth proportional to 401,248.89, 553,780.50 and 248,336.33 is: 342,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,248.89 : 553,780.50 = 248,336.33 : x
  2. Step 2: Convert to fraction form
    401,248.89/553,780.50 = 248,336.33/x
  3. Step 3: Cross multiply
    401,248.89x = 553,780.50 × 248,336.33
  4. Step 4: Simplify right side
    401,248.89x = 137,523,816,410.42
  5. Step 5: Solve for x
    x = 137,523,816,410.42/401,248.89
  6. Step 6: Final answer
    x = 342,739.43

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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.