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Finding the Fourth Proportional to 262,323.70, 393,485.55 and 209,835.70

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Solution

The fourth proportional to 262,323.70, 393,485.55 and 209,835.70 is: 314,753.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,323.70 : 393,485.55 = 209,835.70 : x
  2. Step 2: Convert to fraction form
    262,323.70/393,485.55 = 209,835.70/x
  3. Step 3: Cross multiply
    262,323.70x = 393,485.55 × 209,835.70
  4. Step 4: Simplify right side
    262,323.70x = 82,567,315,824.14
  5. Step 5: Solve for x
    x = 82,567,315,824.14/262,323.70
  6. Step 6: Final answer
    x = 314,753.55

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1.5x scale

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.