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Finding the Fourth Proportional to 355,677.63, 490,797.68 and 212,417.79

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Solution

The fourth proportional to 355,677.63, 490,797.68 and 212,417.79 is: 293,114.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,677.63 : 490,797.68 = 212,417.79 : x
  2. Step 2: Convert to fraction form
    355,677.63/490,797.68 = 212,417.79/x
  3. Step 3: Cross multiply
    355,677.63x = 490,797.68 × 212,417.79
  4. Step 4: Simplify right side
    355,677.63x = 104,254,157,460.64
  5. Step 5: Solve for x
    x = 104,254,157,460.64/355,677.63
  6. Step 6: Final answer
    x = 293,114.18

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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.