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Finding the Fourth Proportional to 488,378.63, 673,898.54 and 281,654.75

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Solution

The fourth proportional to 488,378.63, 673,898.54 and 281,654.75 is: 388,646.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,378.63 : 673,898.54 = 281,654.75 : x
  2. Step 2: Convert to fraction form
    488,378.63/673,898.54 = 281,654.75/x
  3. Step 3: Cross multiply
    488,378.63x = 673,898.54 × 281,654.75
  4. Step 4: Simplify right side
    488,378.63x = 189,806,725,085.54
  5. Step 5: Solve for x
    x = 189,806,725,085.54/488,378.63
  6. Step 6: Final answer
    x = 388,646.66

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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.