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Finding the Fourth Proportional to 455,709.55, 628,877.14 and 251,760.50

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Solution

The fourth proportional to 455,709.55, 628,877.14 and 251,760.50 is: 347,428.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,709.55 : 628,877.14 = 251,760.50 : x
  2. Step 2: Convert to fraction form
    455,709.55/628,877.14 = 251,760.50/x
  3. Step 3: Cross multiply
    455,709.55x = 628,877.14 × 251,760.50
  4. Step 4: Simplify right side
    455,709.55x = 158,326,424,147.76
  5. Step 5: Solve for x
    x = 158,326,424,147.76/455,709.55
  6. Step 6: Final answer
    x = 347,428.37

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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.