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Finding the Fourth Proportional to 171,460.80, 257,201.28 and 66,280.32

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Solution

The fourth proportional to 171,460.80, 257,201.28 and 66,280.32 is: 99,424.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,460.80 : 257,201.28 = 66,280.32 : x
  2. Step 2: Convert to fraction form
    171,460.80/257,201.28 = 66,280.32/x
  3. Step 3: Cross multiply
    171,460.80x = 257,201.28 × 66,280.32
  4. Step 4: Simplify right side
    171,460.80x = 17,047,383,142.81
  5. Step 5: Solve for x
    x = 17,047,383,142.81/171,460.80
  6. Step 6: Final answer
    x = 99,424.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.