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Finding the Fourth Proportional to 438,873.58, 658,333.05 and 139,377.70

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Solution

The fourth proportional to 438,873.58, 658,333.05 and 139,377.70 is: 209,073.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,873.58 : 658,333.05 = 139,377.70 : x
  2. Step 2: Convert to fraction form
    438,873.58/658,333.05 = 139,377.70/x
  3. Step 3: Cross multiply
    438,873.58x = 658,333.05 × 139,377.70
  4. Step 4: Simplify right side
    438,873.58x = 91,756,946,342.99
  5. Step 5: Solve for x
    x = 91,756,946,342.99/438,873.58
  6. Step 6: Final answer
    x = 209,073.75

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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.