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Finding the Fourth Proportional to 280,467.60, 420,701.40 and 168,493.20

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Solution

The fourth proportional to 280,467.60, 420,701.40 and 168,493.20 is: 252,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,467.60 : 420,701.40 = 168,493.20 : x
  2. Step 2: Convert to fraction form
    280,467.60/420,701.40 = 168,493.20/x
  3. Step 3: Cross multiply
    280,467.60x = 420,701.40 × 168,493.20
  4. Step 4: Simplify right side
    280,467.60x = 70,885,325,130.48
  5. Step 5: Solve for x
    x = 70,885,325,130.48/280,467.60
  6. Step 6: Final answer
    x = 252,739.80

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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.