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Finding the Fourth Proportional to 256,429.40, 384,644.10 and 230,768.60

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Solution

The fourth proportional to 256,429.40, 384,644.10 and 230,768.60 is: 346,152.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,429.40 : 384,644.10 = 230,768.60 : x
  2. Step 2: Convert to fraction form
    256,429.40/384,644.10 = 230,768.60/x
  3. Step 3: Cross multiply
    256,429.40x = 384,644.10 × 230,768.60
  4. Step 4: Simplify right side
    256,429.40x = 88,763,780,455.26
  5. Step 5: Solve for x
    x = 88,763,780,455.26/256,429.40
  6. Step 6: Final answer
    x = 346,152.90

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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.