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Finding the Fourth Proportional to 223,218.10, 311,805.50 and 223,218.10

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Solution

The fourth proportional to 223,218.10, 311,805.50 and 223,218.10 is: 311,805.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,218.10 : 311,805.50 = 223,218.10 : x
  2. Step 2: Convert to fraction form
    223,218.10/311,805.50 = 223,218.10/x
  3. Step 3: Cross multiply
    223,218.10x = 311,805.50 × 223,218.10
  4. Step 4: Simplify right side
    223,218.10x = 69,600,631,279.55
  5. Step 5: Solve for x
    x = 69,600,631,279.55/223,218.10
  6. Step 6: Final answer
    x = 311,805.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.