Home / 420,433.30-630,274.86-154,131.60

Finding the Fourth Proportional to 420,433.30, 630,274.86 and 154,131.60

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Solution

The fourth proportional to 420,433.30, 630,274.86 and 154,131.60 is: 231,059.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,433.30 : 630,274.86 = 154,131.60 : x
  2. Step 2: Convert to fraction form
    420,433.30/630,274.86 = 154,131.60/x
  3. Step 3: Cross multiply
    420,433.30x = 630,274.86 × 154,131.60
  4. Step 4: Simplify right side
    420,433.30x = 97,145,272,611.58
  5. Step 5: Solve for x
    x = 97,145,272,611.58/420,433.30
  6. Step 6: Final answer
    x = 231,059.89

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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.