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Finding the Fourth Proportional to 283,388.70, 425,026.22 and 139,234.35

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Solution

The fourth proportional to 283,388.70, 425,026.22 and 139,234.35 is: 208,823.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,388.70 : 425,026.22 = 139,234.35 : x
  2. Step 2: Convert to fraction form
    283,388.70/425,026.22 = 139,234.35/x
  3. Step 3: Cross multiply
    283,388.70x = 425,026.22 × 139,234.35
  4. Step 4: Simplify right side
    283,388.70x = 59,178,248,778.49
  5. Step 5: Solve for x
    x = 59,178,248,778.49/283,388.70
  6. Step 6: Final answer
    x = 208,823.60

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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.