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Finding the Fourth Proportional to 499,903.90, 689,865.50 and 270,460.44

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Solution

The fourth proportional to 499,903.90, 689,865.50 and 270,460.44 is: 373,234.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,903.90 : 689,865.50 = 270,460.44 : x
  2. Step 2: Convert to fraction form
    499,903.90/689,865.50 = 270,460.44/x
  3. Step 3: Cross multiply
    499,903.90x = 689,865.50 × 270,460.44
  4. Step 4: Simplify right side
    499,903.90x = 186,581,326,670.82
  5. Step 5: Solve for x
    x = 186,581,326,670.82/499,903.90
  6. Step 6: Final answer
    x = 373,234.39

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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.