Home / 199,622.40-299,779.20-193,401.60

Finding the Fourth Proportional to 199,622.40, 299,779.20 and 193,401.60

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Solution

The fourth proportional to 199,622.40, 299,779.20 and 193,401.60 is: 290,437.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,622.40 : 299,779.20 = 193,401.60 : x
  2. Step 2: Convert to fraction form
    199,622.40/299,779.20 = 193,401.60/x
  3. Step 3: Cross multiply
    199,622.40x = 299,779.20 × 193,401.60
  4. Step 4: Simplify right side
    199,622.40x = 57,977,776,926.72
  5. Step 5: Solve for x
    x = 57,977,776,926.72/199,622.40
  6. Step 6: Final answer
    x = 290,437.23

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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.