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Finding the Fourth Proportional to 369,039.60, 509,300.56 and 205,706.64

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Solution

The fourth proportional to 369,039.60, 509,300.56 and 205,706.64 is: 283,889.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,039.60 : 509,300.56 = 205,706.64 : x
  2. Step 2: Convert to fraction form
    369,039.60/509,300.56 = 205,706.64/x
  3. Step 3: Cross multiply
    369,039.60x = 509,300.56 × 205,706.64
  4. Step 4: Simplify right side
    369,039.60x = 104,766,506,947.72
  5. Step 5: Solve for x
    x = 104,766,506,947.72/369,039.60
  6. Step 6: Final answer
    x = 283,889.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.