Home / 212,613.37-318,809.33-79,384.07

Finding the Fourth Proportional to 212,613.37, 318,809.33 and 79,384.07

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Solution

The fourth proportional to 212,613.37, 318,809.33 and 79,384.07 is: 119,034.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,613.37 : 318,809.33 = 79,384.07 : x
  2. Step 2: Convert to fraction form
    212,613.37/318,809.33 = 79,384.07/x
  3. Step 3: Cross multiply
    212,613.37x = 318,809.33 × 79,384.07
  4. Step 4: Simplify right side
    212,613.37x = 25,308,381,520.40
  5. Step 5: Solve for x
    x = 25,308,381,520.40/212,613.37
  6. Step 6: Final answer
    x = 119,034.76

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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.