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Finding the Fourth Proportional to 171,678.60, 257,517.90 and 146,309.40

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Solution

The fourth proportional to 171,678.60, 257,517.90 and 146,309.40 is: 219,464.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,678.60 : 257,517.90 = 146,309.40 : x
  2. Step 2: Convert to fraction form
    171,678.60/257,517.90 = 146,309.40/x
  3. Step 3: Cross multiply
    171,678.60x = 257,517.90 × 146,309.40
  4. Step 4: Simplify right side
    171,678.60x = 37,677,289,438.26
  5. Step 5: Solve for x
    x = 37,677,289,438.26/171,678.60
  6. Step 6: Final answer
    x = 219,464.10

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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.