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Finding the Fourth Proportional to 313,473.48, 432,725.82 and 211,636.87

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Solution

The fourth proportional to 313,473.48, 432,725.82 and 211,636.87 is: 292,148.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,473.48 : 432,725.82 = 211,636.87 : x
  2. Step 2: Convert to fraction form
    313,473.48/432,725.82 = 211,636.87/x
  3. Step 3: Cross multiply
    313,473.48x = 432,725.82 × 211,636.87
  4. Step 4: Simplify right side
    313,473.48x = 91,580,738,112.98
  5. Step 5: Solve for x
    x = 91,580,738,112.98/313,473.48
  6. Step 6: Final answer
    x = 292,148.28

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1.5x scale

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.