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Finding the Fourth Proportional to 347,685.80, 521,528.70 and 268,856.60

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Solution

The fourth proportional to 347,685.80, 521,528.70 and 268,856.60 is: 403,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,685.80 : 521,528.70 = 268,856.60 : x
  2. Step 2: Convert to fraction form
    347,685.80/521,528.70 = 268,856.60/x
  3. Step 3: Cross multiply
    347,685.80x = 521,528.70 × 268,856.60
  4. Step 4: Simplify right side
    347,685.80x = 140,216,433,084.42
  5. Step 5: Solve for x
    x = 140,216,433,084.42/347,685.80
  6. Step 6: Final answer
    x = 403,284.90

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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.