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Finding the Fourth Proportional to 353,662.20, 530,525.70 and 143,256.60

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Solution

The fourth proportional to 353,662.20, 530,525.70 and 143,256.60 is: 214,898.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,662.20 : 530,525.70 = 143,256.60 : x
  2. Step 2: Convert to fraction form
    353,662.20/530,525.70 = 143,256.60/x
  3. Step 3: Cross multiply
    353,662.20x = 530,525.70 × 143,256.60
  4. Step 4: Simplify right side
    353,662.20x = 76,001,307,994.62
  5. Step 5: Solve for x
    x = 76,001,307,994.62/353,662.20
  6. Step 6: Final answer
    x = 214,898.02

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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.