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Finding the Fourth Proportional to 455,349.76, 683,505.60 and 255,840.64

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Solution

The fourth proportional to 455,349.76, 683,505.60 and 255,840.64 is: 384,031.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,349.76 : 683,505.60 = 255,840.64 : x
  2. Step 2: Convert to fraction form
    455,349.76/683,505.60 = 255,840.64/x
  3. Step 3: Cross multiply
    455,349.76x = 683,505.60 × 255,840.64
  4. Step 4: Simplify right side
    455,349.76x = 174,868,510,147.58
  5. Step 5: Solve for x
    x = 174,868,510,147.58/455,349.76
  6. Step 6: Final answer
    x = 384,031.19

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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.