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Finding the Fourth Proportional to 255,538.20, 383,453.10 and 97,879.80

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Solution

The fourth proportional to 255,538.20, 383,453.10 and 97,879.80 is: 146,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,538.20 : 383,453.10 = 97,879.80 : x
  2. Step 2: Convert to fraction form
    255,538.20/383,453.10 = 97,879.80/x
  3. Step 3: Cross multiply
    255,538.20x = 383,453.10 × 97,879.80
  4. Step 4: Simplify right side
    255,538.20x = 37,532,312,737.38
  5. Step 5: Solve for x
    x = 37,532,312,737.38/255,538.20
  6. Step 6: Final answer
    x = 146,875.55

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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.