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Finding the Fourth Proportional to 323,740.16, 444,384.52 and 287,129.80

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Solution

The fourth proportional to 323,740.16, 444,384.52 and 287,129.80 is: 394,131.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,740.16 : 444,384.52 = 287,129.80 : x
  2. Step 2: Convert to fraction form
    323,740.16/444,384.52 = 287,129.80/x
  3. Step 3: Cross multiply
    323,740.16x = 444,384.52 × 287,129.80
  4. Step 4: Simplify right side
    323,740.16x = 127,596,038,350.70
  5. Step 5: Solve for x
    x = 127,596,038,350.70/323,740.16
  6. Step 6: Final answer
    x = 394,131.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.