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Finding the Fourth Proportional to 284,709.44, 392,868.96 and 157,364.48

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Solution

The fourth proportional to 284,709.44, 392,868.96 and 157,364.48 is: 217,146.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,709.44 : 392,868.96 = 157,364.48 : x
  2. Step 2: Convert to fraction form
    284,709.44/392,868.96 = 157,364.48/x
  3. Step 3: Cross multiply
    284,709.44x = 392,868.96 × 157,364.48
  4. Step 4: Simplify right side
    284,709.44x = 61,823,619,598.54
  5. Step 5: Solve for x
    x = 61,823,619,598.54/284,709.44
  6. Step 6: Final answer
    x = 217,146.36

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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.