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Finding the Fourth Proportional to 316,719.81, 475,096.05 and 80,064.54

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Solution

The fourth proportional to 316,719.81, 475,096.05 and 80,064.54 is: 120,100.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,719.81 : 475,096.05 = 80,064.54 : x
  2. Step 2: Convert to fraction form
    316,719.81/475,096.05 = 80,064.54/x
  3. Step 3: Cross multiply
    316,719.81x = 475,096.05 × 80,064.54
  4. Step 4: Simplify right side
    316,719.81x = 38,038,346,699.07
  5. Step 5: Solve for x
    x = 38,038,346,699.07/316,719.81
  6. Step 6: Final answer
    x = 120,100.94

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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.