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Finding the Fourth Proportional to 278,760.04, 384,676.53 and 157,898.90

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Solution

The fourth proportional to 278,760.04, 384,676.53 and 157,898.90 is: 217,893.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,760.04 : 384,676.53 = 157,898.90 : x
  2. Step 2: Convert to fraction form
    278,760.04/384,676.53 = 157,898.90/x
  3. Step 3: Cross multiply
    278,760.04x = 384,676.53 × 157,898.90
  4. Step 4: Simplify right side
    278,760.04x = 60,740,000,942.82
  5. Step 5: Solve for x
    x = 60,740,000,942.82/278,760.04
  6. Step 6: Final answer
    x = 217,893.50

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1.5x scale

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.