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Finding the Fourth Proportional to 171,639.60, 257,455.35 and 46,980.60

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Solution

The fourth proportional to 171,639.60, 257,455.35 and 46,980.60 is: 70,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,639.60 : 257,455.35 = 46,980.60 : x
  2. Step 2: Convert to fraction form
    171,639.60/257,455.35 = 46,980.60/x
  3. Step 3: Cross multiply
    171,639.60x = 257,455.35 × 46,980.60
  4. Step 4: Simplify right side
    171,639.60x = 12,095,406,816.21
  5. Step 5: Solve for x
    x = 12,095,406,816.21/171,639.60
  6. Step 6: Final answer
    x = 70,469.79

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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.