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Finding the Fourth Proportional to 315,668.64, 473,572.92 and 91,011.54

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Solution

The fourth proportional to 315,668.64, 473,572.92 and 91,011.54 is: 136,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,668.64 : 473,572.92 = 91,011.54 : x
  2. Step 2: Convert to fraction form
    315,668.64/473,572.92 = 91,011.54/x
  3. Step 3: Cross multiply
    315,668.64x = 473,572.92 × 91,011.54
  4. Step 4: Simplify right side
    315,668.64x = 43,100,601,280.79
  5. Step 5: Solve for x
    x = 43,100,601,280.79/315,668.64
  6. Step 6: Final answer
    x = 136,537.48

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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.