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Finding the Fourth Proportional to 455,136.96, 628,051.68 and 253,928.64

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Solution

The fourth proportional to 455,136.96, 628,051.68 and 253,928.64 is: 350,400.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,136.96 : 628,051.68 = 253,928.64 : x
  2. Step 2: Convert to fraction form
    455,136.96/628,051.68 = 253,928.64/x
  3. Step 3: Cross multiply
    455,136.96x = 628,051.68 × 253,928.64
  4. Step 4: Simplify right side
    455,136.96x = 159,480,308,952.12
  5. Step 5: Solve for x
    x = 159,480,308,952.12/455,136.96
  6. Step 6: Final answer
    x = 350,400.70

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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.