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Finding the Fourth Proportional to 257,072.80, 385,551.60 and 168,944.80

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Solution

The fourth proportional to 257,072.80, 385,551.60 and 168,944.80 is: 253,379.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,072.80 : 385,551.60 = 168,944.80 : x
  2. Step 2: Convert to fraction form
    257,072.80/385,551.60 = 168,944.80/x
  3. Step 3: Cross multiply
    257,072.80x = 385,551.60 × 168,944.80
  4. Step 4: Simplify right side
    257,072.80x = 65,136,937,951.68
  5. Step 5: Solve for x
    x = 65,136,937,951.68/257,072.80
  6. Step 6: Final answer
    x = 253,379.35

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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.