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Finding the Fourth Proportional to 333,411.36, 499,669.74 and 215,021.76

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Solution

The fourth proportional to 333,411.36, 499,669.74 and 215,021.76 is: 322,244.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,411.36 : 499,669.74 = 215,021.76 : x
  2. Step 2: Convert to fraction form
    333,411.36/499,669.74 = 215,021.76/x
  3. Step 3: Cross multiply
    333,411.36x = 499,669.74 × 215,021.76
  4. Step 4: Simplify right side
    333,411.36x = 107,439,866,913.54
  5. Step 5: Solve for x
    x = 107,439,866,913.54/333,411.36
  6. Step 6: Final answer
    x = 322,244.17

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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.