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Finding the Fourth Proportional to 289,331.20, 433,651.20 and 149,017.60

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Solution

The fourth proportional to 289,331.20, 433,651.20 and 149,017.60 is: 223,348.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,331.20 : 433,651.20 = 149,017.60 : x
  2. Step 2: Convert to fraction form
    289,331.20/433,651.20 = 149,017.60/x
  3. Step 3: Cross multiply
    289,331.20x = 433,651.20 × 149,017.60
  4. Step 4: Simplify right side
    289,331.20x = 64,621,661,061.12
  5. Step 5: Solve for x
    x = 64,621,661,061.12/289,331.20
  6. Step 6: Final answer
    x = 223,348.40

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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.