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Finding the Fourth Proportional to 374,886.90, 516,975.30 and 343,768.64

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Solution

The fourth proportional to 374,886.90, 516,975.30 and 343,768.64 is: 474,062.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,886.90 : 516,975.30 = 343,768.64 : x
  2. Step 2: Convert to fraction form
    374,886.90/516,975.30 = 343,768.64/x
  3. Step 3: Cross multiply
    374,886.90x = 516,975.30 × 343,768.64
  4. Step 4: Simplify right side
    374,886.90x = 177,719,893,209.72
  5. Step 5: Solve for x
    x = 177,719,893,209.72/374,886.90
  6. Step 6: Final answer
    x = 474,062.69

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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.