Home / 280,157,136.40-420,298,690.20-165,082,445.20

Finding the Fourth Proportional to 280,157,136.40, 420,298,690.20 and 165,082,445.20

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Solution

The fourth proportional to 280,157,136.40, 420,298,690.20 and 165,082,445.20 is: 247,660,782.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,157,136.40 : 420,298,690.20 = 165,082,445.20 : x
  2. Step 2: Convert to fraction form
    280,157,136.40/420,298,690.20 = 165,082,445.20/x
  3. Step 3: Cross multiply
    280,157,136.40x = 420,298,690.20 × 165,082,445.20
  4. Step 4: Simplify right side
    280,157,136.40x = 69,383,935,492,573,272
  5. Step 5: Solve for x
    x = 69,383,935,492,573,272/280,157,136.40
  6. Step 6: Final answer
    x = 247,660,782.03

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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.