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Finding the Fourth Proportional to 219,500.72, 302,911 and 118,898.72

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Solution

The fourth proportional to 219,500.72, 302,911 and 118,898.72 is: 164,080.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,500.72 : 302,911 = 118,898.72 : x
  2. Step 2: Convert to fraction form
    219,500.72/302,911 = 118,898.72/x
  3. Step 3: Cross multiply
    219,500.72x = 302,911 × 118,898.72
  4. Step 4: Simplify right side
    219,500.72x = 36,015,730,173.92
  5. Step 5: Solve for x
    x = 36,015,730,173.92/219,500.72
  6. Step 6: Final answer
    x = 164,080.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.