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Finding the Fourth Proportional to 284,551.85, 392,676.73 and 155,487.47

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Solution

The fourth proportional to 284,551.85, 392,676.73 and 155,487.47 is: 214,570.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,551.85 : 392,676.73 = 155,487.47 : x
  2. Step 2: Convert to fraction form
    284,551.85/392,676.73 = 155,487.47/x
  3. Step 3: Cross multiply
    284,551.85x = 392,676.73 × 155,487.47
  4. Step 4: Simplify right side
    284,551.85x = 61,056,308,923.47
  5. Step 5: Solve for x
    x = 61,056,308,923.47/284,551.85
  6. Step 6: Final answer
    x = 214,570.06

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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.