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Finding the Fourth Proportional to 171,970.72, 256,798.07 and 140,443.37

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Solution

The fourth proportional to 171,970.72, 256,798.07 and 140,443.37 is: 209,719.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,970.72 : 256,798.07 = 140,443.37 : x
  2. Step 2: Convert to fraction form
    171,970.72/256,798.07 = 140,443.37/x
  3. Step 3: Cross multiply
    171,970.72x = 256,798.07 × 140,443.37
  4. Step 4: Simplify right side
    171,970.72x = 36,065,586,258.74
  5. Step 5: Solve for x
    x = 36,065,586,258.74/171,970.72
  6. Step 6: Final answer
    x = 209,719.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.