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Finding the Fourth Proportional to 420,480.44, 630,803.73 and 154,243.26

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Solution

The fourth proportional to 420,480.44, 630,803.73 and 154,243.26 is: 231,395.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,480.44 : 630,803.73 = 154,243.26 : x
  2. Step 2: Convert to fraction form
    420,480.44/630,803.73 = 154,243.26/x
  3. Step 3: Cross multiply
    420,480.44x = 630,803.73 × 154,243.26
  4. Step 4: Simplify right side
    420,480.44x = 97,297,224,313.77
  5. Step 5: Solve for x
    x = 97,297,224,313.77/420,480.44
  6. Step 6: Final answer
    x = 231,395.36

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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.