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Finding the Fourth Proportional to 555,976.32, 767,241.96 and 310,958.40

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Solution

The fourth proportional to 555,976.32, 767,241.96 and 310,958.40 is: 429,119.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,976.32 : 767,241.96 = 310,958.40 : x
  2. Step 2: Convert to fraction form
    555,976.32/767,241.96 = 310,958.40/x
  3. Step 3: Cross multiply
    555,976.32x = 767,241.96 × 310,958.40
  4. Step 4: Simplify right side
    555,976.32x = 238,580,332,294.46
  5. Step 5: Solve for x
    x = 238,580,332,294.46/555,976.32
  6. Step 6: Final answer
    x = 429,119.59

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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.