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Finding the Fourth Proportional to 455,063.64, 628,112.73 and 264,138.54

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Solution

The fourth proportional to 455,063.64, 628,112.73 and 264,138.54 is: 364,583.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,063.64 : 628,112.73 = 264,138.54 : x
  2. Step 2: Convert to fraction form
    455,063.64/628,112.73 = 264,138.54/x
  3. Step 3: Cross multiply
    455,063.64x = 628,112.73 × 264,138.54
  4. Step 4: Simplify right side
    455,063.64x = 165,908,779,457.61
  5. Step 5: Solve for x
    x = 165,908,779,457.61/455,063.64
  6. Step 6: Final answer
    x = 364,583.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.