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Finding the Fourth Proportional to 355,366.94, 490,248.69 and 212,043.71

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Solution

The fourth proportional to 355,366.94, 490,248.69 and 212,043.71 is: 292,526.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,366.94 : 490,248.69 = 212,043.71 : x
  2. Step 2: Convert to fraction form
    355,366.94/490,248.69 = 212,043.71/x
  3. Step 3: Cross multiply
    355,366.94x = 490,248.69 × 212,043.71
  4. Step 4: Simplify right side
    355,366.94x = 103,954,148,599.00
  5. Step 5: Solve for x
    x = 103,954,148,599.00/355,366.94
  6. Step 6: Final answer
    x = 292,526.23

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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.