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Finding the Fourth Proportional to 374,272.92, 516,496.08 and 213,128

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Solution

The fourth proportional to 374,272.92, 516,496.08 and 213,128 is: 294,116.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,272.92 : 516,496.08 = 213,128 : x
  2. Step 2: Convert to fraction form
    374,272.92/516,496.08 = 213,128/x
  3. Step 3: Cross multiply
    374,272.92x = 516,496.08 × 213,128
  4. Step 4: Simplify right side
    374,272.92x = 110,079,776,538.24
  5. Step 5: Solve for x
    x = 110,079,776,538.24/374,272.92
  6. Step 6: Final answer
    x = 294,116.33

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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.