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Finding the Fourth Proportional to 570,621.12, 856,074 and 171,269.28

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Solution

The fourth proportional to 570,621.12, 856,074 and 171,269.28 is: 256,946.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,621.12 : 856,074 = 171,269.28 : x
  2. Step 2: Convert to fraction form
    570,621.12/856,074 = 171,269.28/x
  3. Step 3: Cross multiply
    570,621.12x = 856,074 × 171,269.28
  4. Step 4: Simplify right side
    570,621.12x = 146,619,177,606.72
  5. Step 5: Solve for x
    x = 146,619,177,606.72/570,621.12
  6. Step 6: Final answer
    x = 256,946.64

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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.