Home / 289,532.28-434,356.48-99,999.60

Finding the Fourth Proportional to 289,532.28, 434,356.48 and 99,999.60

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Solution

The fourth proportional to 289,532.28, 434,356.48 and 99,999.60 is: 150,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,532.28 : 434,356.48 = 99,999.60 : x
  2. Step 2: Convert to fraction form
    289,532.28/434,356.48 = 99,999.60/x
  3. Step 3: Cross multiply
    289,532.28x = 434,356.48 × 99,999.60
  4. Step 4: Simplify right side
    289,532.28x = 43,435,474,257.41
  5. Step 5: Solve for x
    x = 43,435,474,257.41/289,532.28
  6. Step 6: Final answer
    x = 150,019.45

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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.