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Finding the Fourth Proportional to 347,633.70, 521,450.55 and 147,960.60

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Solution

The fourth proportional to 347,633.70, 521,450.55 and 147,960.60 is: 221,940.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,633.70 : 521,450.55 = 147,960.60 : x
  2. Step 2: Convert to fraction form
    347,633.70/521,450.55 = 147,960.60/x
  3. Step 3: Cross multiply
    347,633.70x = 521,450.55 × 147,960.60
  4. Step 4: Simplify right side
    347,633.70x = 77,154,136,248.33
  5. Step 5: Solve for x
    x = 77,154,136,248.33/347,633.70
  6. Step 6: Final answer
    x = 221,940.90

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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.