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Finding the Fourth Proportional to 316,749.34, 475,074.50 and 103,515.56

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Solution

The fourth proportional to 316,749.34, 475,074.50 and 103,515.56 is: 155,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,749.34 : 475,074.50 = 103,515.56 : x
  2. Step 2: Convert to fraction form
    316,749.34/475,074.50 = 103,515.56/x
  3. Step 3: Cross multiply
    316,749.34x = 475,074.50 × 103,515.56
  4. Step 4: Simplify right side
    316,749.34x = 49,177,602,391.64
  5. Step 5: Solve for x
    x = 49,177,602,391.64/316,749.34
  6. Step 6: Final answer
    x = 155,257.16

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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.