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Finding the Fourth Proportional to 255,500.40, 383,423.40 and 143,180.40

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Solution

The fourth proportional to 255,500.40, 383,423.40 and 143,180.40 is: 214,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,500.40 : 383,423.40 = 143,180.40 : x
  2. Step 2: Convert to fraction form
    255,500.40/383,423.40 = 143,180.40/x
  3. Step 3: Cross multiply
    255,500.40x = 383,423.40 × 143,180.40
  4. Step 4: Simplify right side
    255,500.40x = 54,898,715,781.36
  5. Step 5: Solve for x
    x = 54,898,715,781.36/255,500.40
  6. Step 6: Final answer
    x = 214,867.44

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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.