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Finding the Fourth Proportional to 289,041.60, 433,756.80 and 131,188.80

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Solution

The fourth proportional to 289,041.60, 433,756.80 and 131,188.80 is: 196,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,041.60 : 433,756.80 = 131,188.80 : x
  2. Step 2: Convert to fraction form
    289,041.60/433,756.80 = 131,188.80/x
  3. Step 3: Cross multiply
    289,041.60x = 433,756.80 × 131,188.80
  4. Step 4: Simplify right side
    289,041.60x = 56,904,034,083.84
  5. Step 5: Solve for x
    x = 56,904,034,083.84/289,041.60
  6. Step 6: Final answer
    x = 196,871.43

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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.