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Finding the Fourth Proportional to 255,457.80, 383,423.22 and 129,187.44

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Solution

The fourth proportional to 255,457.80, 383,423.22 and 129,187.44 is: 193,900.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,457.80 : 383,423.22 = 129,187.44 : x
  2. Step 2: Convert to fraction form
    255,457.80/383,423.22 = 129,187.44/x
  3. Step 3: Cross multiply
    255,457.80x = 383,423.22 × 129,187.44
  4. Step 4: Simplify right side
    255,457.80x = 49,533,464,228.36
  5. Step 5: Solve for x
    x = 49,533,464,228.36/255,457.80
  6. Step 6: Final answer
    x = 193,900.77

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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.