Home / 262,421.20-393,631.80-209,933.20

Finding the Fourth Proportional to 262,421.20, 393,631.80 and 209,933.20

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Solution

The fourth proportional to 262,421.20, 393,631.80 and 209,933.20 is: 314,899.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,421.20 : 393,631.80 = 209,933.20 : x
  2. Step 2: Convert to fraction form
    262,421.20/393,631.80 = 209,933.20/x
  3. Step 3: Cross multiply
    262,421.20x = 393,631.80 × 209,933.20
  4. Step 4: Simplify right side
    262,421.20x = 82,636,383,395.76
  5. Step 5: Solve for x
    x = 82,636,383,395.76/262,421.20
  6. Step 6: Final answer
    x = 314,899.80

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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.