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Finding the Fourth Proportional to 307,307.58, 424,086.63 and 171,350.43

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Solution

The fourth proportional to 307,307.58, 424,086.63 and 171,350.43 is: 236,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,307.58 : 424,086.63 = 171,350.43 : x
  2. Step 2: Convert to fraction form
    307,307.58/424,086.63 = 171,350.43/x
  3. Step 3: Cross multiply
    307,307.58x = 424,086.63 × 171,350.43
  4. Step 4: Simplify right side
    307,307.58x = 72,667,426,407.75
  5. Step 5: Solve for x
    x = 72,667,426,407.75/307,307.58
  6. Step 6: Final answer
    x = 236,464.80

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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.