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Finding the Fourth Proportional to 305,050.64, 420,968.68 and 170,914.32

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Solution

The fourth proportional to 305,050.64, 420,968.68 and 170,914.32 is: 235,861.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,050.64 : 420,968.68 = 170,914.32 : x
  2. Step 2: Convert to fraction form
    305,050.64/420,968.68 = 170,914.32/x
  3. Step 3: Cross multiply
    305,050.64x = 420,968.68 × 170,914.32
  4. Step 4: Simplify right side
    305,050.64x = 71,949,575,683.50
  5. Step 5: Solve for x
    x = 71,949,575,683.50/305,050.64
  6. Step 6: Final answer
    x = 235,861.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.