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Finding the Fourth Proportional to 315,668.67, 473,572.97 and 91,011.57

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Solution

The fourth proportional to 315,668.67, 473,572.97 and 91,011.57 is: 136,537.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,668.67 : 473,572.97 = 91,011.57 : x
  2. Step 2: Convert to fraction form
    315,668.67/473,572.97 = 91,011.57/x
  3. Step 3: Cross multiply
    315,668.67x = 473,572.97 × 91,011.57
  4. Step 4: Simplify right side
    315,668.67x = 43,100,620,693.20
  5. Step 5: Solve for x
    x = 43,100,620,693.20/315,668.67
  6. Step 6: Final answer
    x = 136,537.53

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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.