Home / 289,918.10-434,457.45-199,868.38

Finding the Fourth Proportional to 289,918.10, 434,457.45 and 199,868.38

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Solution

The fourth proportional to 289,918.10, 434,457.45 and 199,868.38 is: 299,513.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,918.10 : 434,457.45 = 199,868.38 : x
  2. Step 2: Convert to fraction form
    289,918.10/434,457.45 = 199,868.38/x
  3. Step 3: Cross multiply
    289,918.10x = 434,457.45 × 199,868.38
  4. Step 4: Simplify right side
    289,918.10x = 86,834,305,624.29
  5. Step 5: Solve for x
    x = 86,834,305,624.29/289,918.10
  6. Step 6: Final answer
    x = 299,513.22

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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.