Home / 445,904.86-669,075.99-209,266.78

Finding the Fourth Proportional to 445,904.86, 669,075.99 and 209,266.78

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Solution

The fourth proportional to 445,904.86, 669,075.99 and 209,266.78 is: 314,002.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,904.86 : 669,075.99 = 209,266.78 : x
  2. Step 2: Convert to fraction form
    445,904.86/669,075.99 = 209,266.78/x
  3. Step 3: Cross multiply
    445,904.86x = 669,075.99 × 209,266.78
  4. Step 4: Simplify right side
    445,904.86x = 140,015,378,002.61
  5. Step 5: Solve for x
    x = 140,015,378,002.61/445,904.86
  6. Step 6: Final answer
    x = 314,002.81

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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.