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Finding the Fourth Proportional to 289,939.40, 434,909.10 and 183,651.20

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Solution

The fourth proportional to 289,939.40, 434,909.10 and 183,651.20 is: 275,476.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,939.40 : 434,909.10 = 183,651.20 : x
  2. Step 2: Convert to fraction form
    289,939.40/434,909.10 = 183,651.20/x
  3. Step 3: Cross multiply
    289,939.40x = 434,909.10 × 183,651.20
  4. Step 4: Simplify right side
    289,939.40x = 79,871,578,105.92
  5. Step 5: Solve for x
    x = 79,871,578,105.92/289,939.40
  6. Step 6: Final answer
    x = 275,476.80

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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.