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Finding the Fourth Proportional to 338,321.40, 507,611.70 and 333,007.80

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Solution

The fourth proportional to 338,321.40, 507,611.70 and 333,007.80 is: 499,639.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,321.40 : 507,611.70 = 333,007.80 : x
  2. Step 2: Convert to fraction form
    338,321.40/507,611.70 = 333,007.80/x
  3. Step 3: Cross multiply
    338,321.40x = 507,611.70 × 333,007.80
  4. Step 4: Simplify right side
    338,321.40x = 169,038,655,471.26
  5. Step 5: Solve for x
    x = 169,038,655,471.26/338,321.40
  6. Step 6: Final answer
    x = 499,639.26

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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.