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Finding the Fourth Proportional to 284,202.72, 392,202.99 and 156,878.37

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Solution

The fourth proportional to 284,202.72, 392,202.99 and 156,878.37 is: 216,493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,202.72 : 392,202.99 = 156,878.37 : x
  2. Step 2: Convert to fraction form
    284,202.72/392,202.99 = 156,878.37/x
  3. Step 3: Cross multiply
    284,202.72x = 392,202.99 × 156,878.37
  4. Step 4: Simplify right side
    284,202.72x = 61,528,165,780.33
  5. Step 5: Solve for x
    x = 61,528,165,780.33/284,202.72
  6. Step 6: Final answer
    x = 216,493.94

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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.