Home / 316,651.20-436,955.10-178,821.78

Finding the Fourth Proportional to 316,651.20, 436,955.10 and 178,821.78

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Solution

The fourth proportional to 316,651.20, 436,955.10 and 178,821.78 is: 246,760.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,651.20 : 436,955.10 = 178,821.78 : x
  2. Step 2: Convert to fraction form
    316,651.20/436,955.10 = 178,821.78/x
  3. Step 3: Cross multiply
    316,651.20x = 436,955.10 × 178,821.78
  4. Step 4: Simplify right side
    316,651.20x = 78,137,088,762.08
  5. Step 5: Solve for x
    x = 78,137,088,762.08/316,651.20
  6. Step 6: Final answer
    x = 246,760.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.