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Finding the Fourth Proportional to 212,313.33, 318,461.76 and 79,193.34

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Solution

The fourth proportional to 212,313.33, 318,461.76 and 79,193.34 is: 118,786.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,313.33 : 318,461.76 = 79,193.34 : x
  2. Step 2: Convert to fraction form
    212,313.33/318,461.76 = 79,193.34/x
  3. Step 3: Cross multiply
    212,313.33x = 318,461.76 × 79,193.34
  4. Step 4: Simplify right side
    212,313.33x = 25,220,050,436.68
  5. Step 5: Solve for x
    x = 25,220,050,436.68/212,313.33
  6. Step 6: Final answer
    x = 118,786.94

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1.5x scale

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.