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Finding the Fourth Proportional to 255,817.40, 383,507.28 and 98,159

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Solution

The fourth proportional to 255,817.40, 383,507.28 and 98,159 is: 147,154.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,817.40 : 383,507.28 = 98,159 : x
  2. Step 2: Convert to fraction form
    255,817.40/383,507.28 = 98,159/x
  3. Step 3: Cross multiply
    255,817.40x = 383,507.28 × 98,159
  4. Step 4: Simplify right side
    255,817.40x = 37,644,691,097.52
  5. Step 5: Solve for x
    x = 37,644,691,097.52/255,817.40
  6. Step 6: Final answer
    x = 147,154.54

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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.