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Finding the Fourth Proportional to 370,316.70, 511,078.60 and 209,182.12

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Solution

The fourth proportional to 370,316.70, 511,078.60 and 209,182.12 is: 288,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,316.70 : 511,078.60 = 209,182.12 : x
  2. Step 2: Convert to fraction form
    370,316.70/511,078.60 = 209,182.12/x
  3. Step 3: Cross multiply
    370,316.70x = 511,078.60 × 209,182.12
  4. Step 4: Simplify right side
    370,316.70x = 106,908,505,880.36
  5. Step 5: Solve for x
    x = 106,908,505,880.36/370,316.70
  6. Step 6: Final answer
    x = 288,694.80

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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.