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Finding the Fourth Proportional to 289,000.80, 433,533.60 and 89,319.60

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Solution

The fourth proportional to 289,000.80, 433,533.60 and 89,319.60 is: 133,989.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,000.80 : 433,533.60 = 89,319.60 : x
  2. Step 2: Convert to fraction form
    289,000.80/433,533.60 = 89,319.60/x
  3. Step 3: Cross multiply
    289,000.80x = 433,533.60 × 89,319.60
  4. Step 4: Simplify right side
    289,000.80x = 38,723,047,738.56
  5. Step 5: Solve for x
    x = 38,723,047,738.56/289,000.80
  6. Step 6: Final answer
    x = 133,989.41

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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.