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Finding the Fourth Proportional to 445,375.52, 613,793.93 and 316,319.64

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Solution

The fourth proportional to 445,375.52, 613,793.93 and 316,319.64 is: 435,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,375.52 : 613,793.93 = 316,319.64 : x
  2. Step 2: Convert to fraction form
    445,375.52/613,793.93 = 316,319.64/x
  3. Step 3: Cross multiply
    445,375.52x = 613,793.93 × 316,319.64
  4. Step 4: Simplify right side
    445,375.52x = 194,155,074,971.79
  5. Step 5: Solve for x
    x = 194,155,074,971.79/445,375.52
  6. Step 6: Final answer
    x = 435,935.67

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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.