Home / 445,899.80-668,849.70-209,266.40

Finding the Fourth Proportional to 445,899.80, 668,849.70 and 209,266.40

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Solution

The fourth proportional to 445,899.80, 668,849.70 and 209,266.40 is: 313,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,899.80 : 668,849.70 = 209,266.40 : x
  2. Step 2: Convert to fraction form
    445,899.80/668,849.70 = 209,266.40/x
  3. Step 3: Cross multiply
    445,899.80x = 668,849.70 × 209,266.40
  4. Step 4: Simplify right side
    445,899.80x = 139,967,768,860.08
  5. Step 5: Solve for x
    x = 139,967,768,860.08/445,899.80
  6. Step 6: Final answer
    x = 313,899.60

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Similar ratio
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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.