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Finding the Fourth Proportional to 488,889.05, 733,461.15 and 189,379.40

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Solution

The fourth proportional to 488,889.05, 733,461.15 and 189,379.40 is: 284,118.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,889.05 : 733,461.15 = 189,379.40 : x
  2. Step 2: Convert to fraction form
    488,889.05/733,461.15 = 189,379.40/x
  3. Step 3: Cross multiply
    488,889.05x = 733,461.15 × 189,379.40
  4. Step 4: Simplify right side
    488,889.05x = 138,902,432,510.31
  5. Step 5: Solve for x
    x = 138,902,432,510.31/488,889.05
  6. Step 6: Final answer
    x = 284,118.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.