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Finding the Fourth Proportional to 251,880.34, 347,503.57 and 142,921.58

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Solution

The fourth proportional to 251,880.34, 347,503.57 and 142,921.58 is: 197,179.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,880.34 : 347,503.57 = 142,921.58 : x
  2. Step 2: Convert to fraction form
    251,880.34/347,503.57 = 142,921.58/x
  3. Step 3: Cross multiply
    251,880.34x = 347,503.57 × 142,921.58
  4. Step 4: Simplify right side
    251,880.34x = 49,665,759,280.04
  5. Step 5: Solve for x
    x = 49,665,759,280.04/251,880.34
  6. Step 6: Final answer
    x = 197,179.98

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1.5x scale

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.