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Finding the Fourth Proportional to 255,555.90, 383,335.26 and 105,715.01

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Solution

The fourth proportional to 255,555.90, 383,335.26 and 105,715.01 is: 158,573.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,555.90 : 383,335.26 = 105,715.01 : x
  2. Step 2: Convert to fraction form
    255,555.90/383,335.26 = 105,715.01/x
  3. Step 3: Cross multiply
    255,555.90x = 383,335.26 × 105,715.01
  4. Step 4: Simplify right side
    255,555.90x = 40,524,288,927.58
  5. Step 5: Solve for x
    x = 40,524,288,927.58/255,555.90
  6. Step 6: Final answer
    x = 158,573.09

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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.