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Finding the Fourth Proportional to 262,393.60, 393,784.80 and 104,735.20

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Solution

The fourth proportional to 262,393.60, 393,784.80 and 104,735.20 is: 157,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,393.60 : 393,784.80 = 104,735.20 : x
  2. Step 2: Convert to fraction form
    262,393.60/393,784.80 = 104,735.20/x
  3. Step 3: Cross multiply
    262,393.60x = 393,784.80 × 104,735.20
  4. Step 4: Simplify right side
    262,393.60x = 41,243,129,784.96
  5. Step 5: Solve for x
    x = 41,243,129,784.96/262,393.60
  6. Step 6: Final answer
    x = 157,180.40

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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.