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Finding the Fourth Proportional to 270,442.40, 405,663.60 and 170,715.20

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Solution

The fourth proportional to 270,442.40, 405,663.60 and 170,715.20 is: 256,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,442.40 : 405,663.60 = 170,715.20 : x
  2. Step 2: Convert to fraction form
    270,442.40/405,663.60 = 170,715.20/x
  3. Step 3: Cross multiply
    270,442.40x = 405,663.60 × 170,715.20
  4. Step 4: Simplify right side
    270,442.40x = 69,252,942,606.72
  5. Step 5: Solve for x
    x = 69,252,942,606.72/270,442.40
  6. Step 6: Final answer
    x = 256,072.80

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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.