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Finding the Fourth Proportional to 171,630.40, 257,464.80 and 53,300.80

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Solution

The fourth proportional to 171,630.40, 257,464.80 and 53,300.80 is: 79,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,630.40 : 257,464.80 = 53,300.80 : x
  2. Step 2: Convert to fraction form
    171,630.40/257,464.80 = 53,300.80/x
  3. Step 3: Cross multiply
    171,630.40x = 257,464.80 × 53,300.80
  4. Step 4: Simplify right side
    171,630.40x = 13,723,079,811.84
  5. Step 5: Solve for x
    x = 13,723,079,811.84/171,630.40
  6. Step 6: Final answer
    x = 79,957.16

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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.