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Finding the Fourth Proportional to 371,235.46, 511,917.69 and 220,303.30

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Solution

The fourth proportional to 371,235.46, 511,917.69 and 220,303.30 is: 303,788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,235.46 : 511,917.69 = 220,303.30 : x
  2. Step 2: Convert to fraction form
    371,235.46/511,917.69 = 220,303.30/x
  3. Step 3: Cross multiply
    371,235.46x = 511,917.69 × 220,303.30
  4. Step 4: Simplify right side
    371,235.46x = 112,777,156,435.38
  5. Step 5: Solve for x
    x = 112,777,156,435.38/371,235.46
  6. Step 6: Final answer
    x = 303,788.75

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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.