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Finding the Fourth Proportional to 355,417.36, 490,476.94 and 212,174.33

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Solution

The fourth proportional to 355,417.36, 490,476.94 and 212,174.33 is: 292,801.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,417.36 : 490,476.94 = 212,174.33 : x
  2. Step 2: Convert to fraction form
    355,417.36/490,476.94 = 212,174.33/x
  3. Step 3: Cross multiply
    355,417.36x = 490,476.94 × 212,174.33
  4. Step 4: Simplify right side
    355,417.36x = 104,066,613,142.13
  5. Step 5: Solve for x
    x = 104,066,613,142.13/355,417.36
  6. Step 6: Final answer
    x = 292,801.16

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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.