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Finding the Fourth Proportional to 306,672.63, 423,203.70 and 170,706.38

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Solution

The fourth proportional to 306,672.63, 423,203.70 and 170,706.38 is: 235,572.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,672.63 : 423,203.70 = 170,706.38 : x
  2. Step 2: Convert to fraction form
    306,672.63/423,203.70 = 170,706.38/x
  3. Step 3: Cross multiply
    306,672.63x = 423,203.70 × 170,706.38
  4. Step 4: Simplify right side
    306,672.63x = 72,243,571,629.61
  5. Step 5: Solve for x
    x = 72,243,571,629.61/306,672.63
  6. Step 6: Final answer
    x = 235,572.28

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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.