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Finding the Fourth Proportional to 324,343.10, 486,514.65 and 212,368.70

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Solution

The fourth proportional to 324,343.10, 486,514.65 and 212,368.70 is: 318,553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,343.10 : 486,514.65 = 212,368.70 : x
  2. Step 2: Convert to fraction form
    324,343.10/486,514.65 = 212,368.70/x
  3. Step 3: Cross multiply
    324,343.10x = 486,514.65 × 212,368.70
  4. Step 4: Simplify right side
    324,343.10x = 103,320,483,751.46
  5. Step 5: Solve for x
    x = 103,320,483,751.46/324,343.10
  6. Step 6: Final answer
    x = 318,553.05

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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.