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Finding the Fourth Proportional to 297,705.80, 446,630.70 and 87,350.60

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Solution

The fourth proportional to 297,705.80, 446,630.70 and 87,350.60 is: 131,047.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,705.80 : 446,630.70 = 87,350.60 : x
  2. Step 2: Convert to fraction form
    297,705.80/446,630.70 = 87,350.60/x
  3. Step 3: Cross multiply
    297,705.80x = 446,630.70 × 87,350.60
  4. Step 4: Simplify right side
    297,705.80x = 39,013,459,623.42
  5. Step 5: Solve for x
    x = 39,013,459,623.42/297,705.80
  6. Step 6: Final answer
    x = 131,047.03

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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.