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Finding the Fourth Proportional to 243,786,156.60, 365,679,234.90 and 90,400,474.20

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Solution

The fourth proportional to 243,786,156.60, 365,679,234.90 and 90,400,474.20 is: 135,600,711.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,786,156.60 : 365,679,234.90 = 90,400,474.20 : x
  2. Step 2: Convert to fraction form
    243,786,156.60/365,679,234.90 = 90,400,474.20/x
  3. Step 3: Cross multiply
    243,786,156.60x = 365,679,234.90 × 90,400,474.20
  4. Step 4: Simplify right side
    243,786,156.60x = 33,057,576,240,053,188
  5. Step 5: Solve for x
    x = 33,057,576,240,053,188/243,786,156.60
  6. Step 6: Final answer
    x = 135,600,711.30

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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.