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Finding the Fourth Proportional to 171,038.40, 256,557.60 and 115,051.20

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Solution

The fourth proportional to 171,038.40, 256,557.60 and 115,051.20 is: 172,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,038.40 : 256,557.60 = 115,051.20 : x
  2. Step 2: Convert to fraction form
    171,038.40/256,557.60 = 115,051.20/x
  3. Step 3: Cross multiply
    171,038.40x = 256,557.60 × 115,051.20
  4. Step 4: Simplify right side
    171,038.40x = 29,517,259,749.12
  5. Step 5: Solve for x
    x = 29,517,259,749.12/171,038.40
  6. Step 6: Final answer
    x = 172,576.80

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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.