Home / 420,211.48-630,315.86-251,782.41

Finding the Fourth Proportional to 420,211.48, 630,315.86 and 251,782.41

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Solution

The fourth proportional to 420,211.48, 630,315.86 and 251,782.41 is: 377,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,211.48 : 630,315.86 = 251,782.41 : x
  2. Step 2: Convert to fraction form
    420,211.48/630,315.86 = 251,782.41/x
  3. Step 3: Cross multiply
    420,211.48x = 630,315.86 × 251,782.41
  4. Step 4: Simplify right side
    420,211.48x = 158,702,446,292.02
  5. Step 5: Solve for x
    x = 158,702,446,292.02/420,211.48
  6. Step 6: Final answer
    x = 377,672.80

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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.