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Finding the Fourth Proportional to 455,771.02, 628,953.51 and 251,811.40

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Solution

The fourth proportional to 455,771.02, 628,953.51 and 251,811.40 is: 347,493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,771.02 : 628,953.51 = 251,811.40 : x
  2. Step 2: Convert to fraction form
    455,771.02/628,953.51 = 251,811.40/x
  3. Step 3: Cross multiply
    455,771.02x = 628,953.51 × 251,811.40
  4. Step 4: Simplify right side
    455,771.02x = 158,377,663,888.01
  5. Step 5: Solve for x
    x = 158,377,663,888.01/455,771.02
  6. Step 6: Final answer
    x = 347,493.93

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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.