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Finding the Fourth Proportional to 345,931.20, 520,063.20 and 294,609.60

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Solution

The fourth proportional to 345,931.20, 520,063.20 and 294,609.60 is: 442,907.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,931.20 : 520,063.20 = 294,609.60 : x
  2. Step 2: Convert to fraction form
    345,931.20/520,063.20 = 294,609.60/x
  3. Step 3: Cross multiply
    345,931.20x = 520,063.20 × 294,609.60
  4. Step 4: Simplify right side
    345,931.20x = 153,215,611,326.72
  5. Step 5: Solve for x
    x = 153,215,611,326.72/345,931.20
  6. Step 6: Final answer
    x = 442,907.76

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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.