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Finding the Fourth Proportional to 312,048.60, 468,072.90 and 275,890.20

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Solution

The fourth proportional to 312,048.60, 468,072.90 and 275,890.20 is: 413,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,048.60 : 468,072.90 = 275,890.20 : x
  2. Step 2: Convert to fraction form
    312,048.60/468,072.90 = 275,890.20/x
  3. Step 3: Cross multiply
    312,048.60x = 468,072.90 × 275,890.20
  4. Step 4: Simplify right side
    312,048.60x = 129,136,725,995.58
  5. Step 5: Solve for x
    x = 129,136,725,995.58/312,048.60
  6. Step 6: Final answer
    x = 413,835.30

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1.5x scale

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.