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Finding the Fourth Proportional to 547,527.60, 821,281.68 and 281,131.56

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Solution

The fourth proportional to 547,527.60, 821,281.68 and 281,131.56 is: 421,692.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,527.60 : 821,281.68 = 281,131.56 : x
  2. Step 2: Convert to fraction form
    547,527.60/821,281.68 = 281,131.56/x
  3. Step 3: Cross multiply
    547,527.60x = 821,281.68 × 281,131.56
  4. Step 4: Simplify right side
    547,527.60x = 230,888,199,897.82
  5. Step 5: Solve for x
    x = 230,888,199,897.82/547,527.60
  6. Step 6: Final answer
    x = 421,692.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.