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Finding the Fourth Proportional to 171,914.40, 257,871.60 and 142,365.60

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Solution

The fourth proportional to 171,914.40, 257,871.60 and 142,365.60 is: 213,548.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,914.40 : 257,871.60 = 142,365.60 : x
  2. Step 2: Convert to fraction form
    171,914.40/257,871.60 = 142,365.60/x
  3. Step 3: Cross multiply
    171,914.40x = 257,871.60 × 142,365.60
  4. Step 4: Simplify right side
    171,914.40x = 36,712,045,056.96
  5. Step 5: Solve for x
    x = 36,712,045,056.96/171,914.40
  6. Step 6: Final answer
    x = 213,548.40

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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.