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Finding the Fourth Proportional to 298,889.60, 448,852.80 and 289,558.40

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Solution

The fourth proportional to 298,889.60, 448,852.80 and 289,558.40 is: 434,839.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,889.60 : 448,852.80 = 289,558.40 : x
  2. Step 2: Convert to fraction form
    298,889.60/448,852.80 = 289,558.40/x
  3. Step 3: Cross multiply
    298,889.60x = 448,852.80 × 289,558.40
  4. Step 4: Simplify right side
    298,889.60x = 129,969,098,603.52
  5. Step 5: Solve for x
    x = 129,969,098,603.52/298,889.60
  6. Step 6: Final answer
    x = 434,839.82

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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.