Home / 397,748.72-549,096.36-306,900.56

Finding the Fourth Proportional to 397,748.72, 549,096.36 and 306,900.56

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Solution

The fourth proportional to 397,748.72, 549,096.36 and 306,900.56 is: 423,679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,748.72 : 549,096.36 = 306,900.56 : x
  2. Step 2: Convert to fraction form
    397,748.72/549,096.36 = 306,900.56/x
  3. Step 3: Cross multiply
    397,748.72x = 549,096.36 × 306,900.56
  4. Step 4: Simplify right side
    397,748.72x = 168,517,980,377.96
  5. Step 5: Solve for x
    x = 168,517,980,377.96/397,748.72
  6. Step 6: Final answer
    x = 423,679.50

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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.