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Finding the Fourth Proportional to 289,274.80, 433,620.60 and 131,616.40

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Solution

The fourth proportional to 289,274.80, 433,620.60 and 131,616.40 is: 197,291.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,274.80 : 433,620.60 = 131,616.40 : x
  2. Step 2: Convert to fraction form
    289,274.80/433,620.60 = 131,616.40/x
  3. Step 3: Cross multiply
    289,274.80x = 433,620.60 × 131,616.40
  4. Step 4: Simplify right side
    289,274.80x = 57,071,582,337.84
  5. Step 5: Solve for x
    x = 57,071,582,337.84/289,274.80
  6. Step 6: Final answer
    x = 197,291.93

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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.