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Finding the Fourth Proportional to 355,504.60, 490,602.18 and 212,277.16

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Solution

The fourth proportional to 355,504.60, 490,602.18 and 212,277.16 is: 292,945.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,504.60 : 490,602.18 = 212,277.16 : x
  2. Step 2: Convert to fraction form
    355,504.60/490,602.18 = 212,277.16/x
  3. Step 3: Cross multiply
    355,504.60x = 490,602.18 × 212,277.16
  4. Step 4: Simplify right side
    355,504.60x = 104,143,637,460.21
  5. Step 5: Solve for x
    x = 104,143,637,460.21/355,504.60
  6. Step 6: Final answer
    x = 292,945.96

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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.