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Finding the Fourth Proportional to 316,342.78, 474,500.32 and 91,698.32

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Solution

The fourth proportional to 316,342.78, 474,500.32 and 91,698.32 is: 137,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,342.78 : 474,500.32 = 91,698.32 : x
  2. Step 2: Convert to fraction form
    316,342.78/474,500.32 = 91,698.32/x
  3. Step 3: Cross multiply
    316,342.78x = 474,500.32 × 91,698.32
  4. Step 4: Simplify right side
    316,342.78x = 43,510,882,183.46
  5. Step 5: Solve for x
    x = 43,510,882,183.46/316,342.78
  6. Step 6: Final answer
    x = 137,543.47

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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.