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Finding the Fourth Proportional to 209,205.20, 313,807.80 and 201,040.40

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Solution

The fourth proportional to 209,205.20, 313,807.80 and 201,040.40 is: 301,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,205.20 : 313,807.80 = 201,040.40 : x
  2. Step 2: Convert to fraction form
    209,205.20/313,807.80 = 201,040.40/x
  3. Step 3: Cross multiply
    209,205.20x = 313,807.80 × 201,040.40
  4. Step 4: Simplify right side
    209,205.20x = 63,088,045,635.12
  5. Step 5: Solve for x
    x = 63,088,045,635.12/209,205.20
  6. Step 6: Final answer
    x = 301,560.60

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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.