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Finding the Fourth Proportional to 311,795.98, 430,279.64 and 173,980.73

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Solution

The fourth proportional to 311,795.98, 430,279.64 and 173,980.73 is: 240,094.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,795.98 : 430,279.64 = 173,980.73 : x
  2. Step 2: Convert to fraction form
    311,795.98/430,279.64 = 173,980.73/x
  3. Step 3: Cross multiply
    311,795.98x = 430,279.64 × 173,980.73
  4. Step 4: Simplify right side
    311,795.98x = 74,860,365,287.88
  5. Step 5: Solve for x
    x = 74,860,365,287.88/311,795.98
  6. Step 6: Final answer
    x = 240,094.07

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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.