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Finding the Fourth Proportional to 219,108.90, 328,663.34 and 52,896.90

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Solution

The fourth proportional to 219,108.90, 328,663.34 and 52,896.90 is: 79,345.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,108.90 : 328,663.34 = 52,896.90 : x
  2. Step 2: Convert to fraction form
    219,108.90/328,663.34 = 52,896.90/x
  3. Step 3: Cross multiply
    219,108.90x = 328,663.34 × 52,896.90
  4. Step 4: Simplify right side
    219,108.90x = 17,385,271,829.65
  5. Step 5: Solve for x
    x = 17,385,271,829.65/219,108.90
  6. Step 6: Final answer
    x = 79,345.35

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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.