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Finding the Fourth Proportional to 374,419.60, 516,791.90 and 213,370.20

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Solution

The fourth proportional to 374,419.60, 516,791.90 and 213,370.20 is: 294,503.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,419.60 : 516,791.90 = 213,370.20 : x
  2. Step 2: Convert to fraction form
    374,419.60/516,791.90 = 213,370.20/x
  3. Step 3: Cross multiply
    374,419.60x = 516,791.90 × 213,370.20
  4. Step 4: Simplify right side
    374,419.60x = 110,267,991,061.38
  5. Step 5: Solve for x
    x = 110,267,991,061.38/374,419.60
  6. Step 6: Final answer
    x = 294,503.79

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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.