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Finding the Fourth Proportional to 355,332.12, 490,200.80 and 212,008.82

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Solution

The fourth proportional to 355,332.12, 490,200.80 and 212,008.82 is: 292,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,332.12 : 490,200.80 = 212,008.82 : x
  2. Step 2: Convert to fraction form
    355,332.12/490,200.80 = 212,008.82/x
  3. Step 3: Cross multiply
    355,332.12x = 490,200.80 × 212,008.82
  4. Step 4: Simplify right side
    355,332.12x = 103,926,893,171.06
  5. Step 5: Solve for x
    x = 103,926,893,171.06/355,332.12
  6. Step 6: Final answer
    x = 292,478.18

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1.5x scale

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.