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Finding the Fourth Proportional to 284,667.37, 392,840.96 and 155,606.39

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Solution

The fourth proportional to 284,667.37, 392,840.96 and 155,606.39 is: 214,736.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,667.37 : 392,840.96 = 155,606.39 : x
  2. Step 2: Convert to fraction form
    284,667.37/392,840.96 = 155,606.39/x
  3. Step 3: Cross multiply
    284,667.37x = 392,840.96 × 155,606.39
  4. Step 4: Simplify right side
    284,667.37x = 61,128,562,360.65
  5. Step 5: Solve for x
    x = 61,128,562,360.65/284,667.37
  6. Step 6: Final answer
    x = 214,736.81

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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.