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Finding the Fourth Proportional to 547,186.16, 755,188.44 and 320,852.72

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Solution

The fourth proportional to 547,186.16, 755,188.44 and 320,852.72 is: 442,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,186.16 : 755,188.44 = 320,852.72 : x
  2. Step 2: Convert to fraction form
    547,186.16/755,188.44 = 320,852.72/x
  3. Step 3: Cross multiply
    547,186.16x = 755,188.44 × 320,852.72
  4. Step 4: Simplify right side
    547,186.16x = 242,304,265,086.56
  5. Step 5: Solve for x
    x = 242,304,265,086.56/547,186.16
  6. Step 6: Final answer
    x = 442,818.70

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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.