Home / 289,531.53-434,355.35-99,998.85

Finding the Fourth Proportional to 289,531.53, 434,355.35 and 99,998.85

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Solution

The fourth proportional to 289,531.53, 434,355.35 and 99,998.85 is: 150,018.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,531.53 : 434,355.35 = 99,998.85 : x
  2. Step 2: Convert to fraction form
    289,531.53/434,355.35 = 99,998.85/x
  3. Step 3: Cross multiply
    289,531.53x = 434,355.35 × 99,998.85
  4. Step 4: Simplify right side
    289,531.53x = 43,435,035,491.35
  5. Step 5: Solve for x
    x = 43,435,035,491.35/289,531.53
  6. Step 6: Final answer
    x = 150,018.33

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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.