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Finding the Fourth Proportional to 289,576.60, 434,048.10 and 102,491.80

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Solution

The fourth proportional to 289,576.60, 434,048.10 and 102,491.80 is: 153,625.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,576.60 : 434,048.10 = 102,491.80 : x
  2. Step 2: Convert to fraction form
    289,576.60/434,048.10 = 102,491.80/x
  3. Step 3: Cross multiply
    289,576.60x = 434,048.10 × 102,491.80
  4. Step 4: Simplify right side
    289,576.60x = 44,486,371,055.58
  5. Step 5: Solve for x
    x = 44,486,371,055.58/289,576.60
  6. Step 6: Final answer
    x = 153,625.57

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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.