Home / 402,964.28-556,079.12-219,197.06

Finding the Fourth Proportional to 402,964.28, 556,079.12 and 219,197.06

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Solution

The fourth proportional to 402,964.28, 556,079.12 and 219,197.06 is: 302,485.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,964.28 : 556,079.12 = 219,197.06 : x
  2. Step 2: Convert to fraction form
    402,964.28/556,079.12 = 219,197.06/x
  3. Step 3: Cross multiply
    402,964.28x = 556,079.12 × 219,197.06
  4. Step 4: Simplify right side
    402,964.28x = 121,890,905,450.99
  5. Step 5: Solve for x
    x = 121,890,905,450.99/402,964.28
  6. Step 6: Final answer
    x = 302,485.64

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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.