Home / 289,583.40-434,375.10-156,723.15

Finding the Fourth Proportional to 289,583.40, 434,375.10 and 156,723.15

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Solution

The fourth proportional to 289,583.40, 434,375.10 and 156,723.15 is: 235,084.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,583.40 : 434,375.10 = 156,723.15 : x
  2. Step 2: Convert to fraction form
    289,583.40/434,375.10 = 156,723.15/x
  3. Step 3: Cross multiply
    289,583.40x = 434,375.10 × 156,723.15
  4. Step 4: Simplify right side
    289,583.40x = 68,076,633,953.57
  5. Step 5: Solve for x
    x = 68,076,633,953.57/289,583.40
  6. Step 6: Final answer
    x = 235,084.73

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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.