Home / 289,272.80-434,189.08-139,618.44

Finding the Fourth Proportional to 289,272.80, 434,189.08 and 139,618.44

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Solution

The fourth proportional to 289,272.80, 434,189.08 and 139,618.44 is: 209,562.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,272.80 : 434,189.08 = 139,618.44 : x
  2. Step 2: Convert to fraction form
    289,272.80/434,189.08 = 139,618.44/x
  3. Step 3: Cross multiply
    289,272.80x = 434,189.08 × 139,618.44
  4. Step 4: Simplify right side
    289,272.80x = 60,620,802,014.64
  5. Step 5: Solve for x
    x = 60,620,802,014.64/289,272.80
  6. Step 6: Final answer
    x = 209,562.74

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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.