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Finding the Fourth Proportional to 347,597.20, 520,618.20 and 285,389.20

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Solution

The fourth proportional to 347,597.20, 520,618.20 and 285,389.20 is: 427,445.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,597.20 : 520,618.20 = 285,389.20 : x
  2. Step 2: Convert to fraction form
    347,597.20/520,618.20 = 285,389.20/x
  3. Step 3: Cross multiply
    347,597.20x = 520,618.20 × 285,389.20
  4. Step 4: Simplify right side
    347,597.20x = 148,578,811,603.44
  5. Step 5: Solve for x
    x = 148,578,811,603.44/347,597.20
  6. Step 6: Final answer
    x = 427,445.36

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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.