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Finding the Fourth Proportional to 307,365.79, 424,215.89 and 178,380.64

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Solution

The fourth proportional to 307,365.79, 424,215.89 and 178,380.64 is: 246,194.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,365.79 : 424,215.89 = 178,380.64 : x
  2. Step 2: Convert to fraction form
    307,365.79/424,215.89 = 178,380.64/x
  3. Step 3: Cross multiply
    307,365.79x = 424,215.89 × 178,380.64
  4. Step 4: Simplify right side
    307,365.79x = 75,671,901,956.37
  5. Step 5: Solve for x
    x = 75,671,901,956.37/307,365.79
  6. Step 6: Final answer
    x = 246,194.94

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1.5x scale

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.