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Finding the Fourth Proportional to 171,430.40, 257,145.60 and 163,654.40

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Solution

The fourth proportional to 171,430.40, 257,145.60 and 163,654.40 is: 245,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,430.40 : 257,145.60 = 163,654.40 : x
  2. Step 2: Convert to fraction form
    171,430.40/257,145.60 = 163,654.40/x
  3. Step 3: Cross multiply
    171,430.40x = 257,145.60 × 163,654.40
  4. Step 4: Simplify right side
    171,430.40x = 42,083,008,880.64
  5. Step 5: Solve for x
    x = 42,083,008,880.64/171,430.40
  6. Step 6: Final answer
    x = 245,481.60

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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.