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Finding the Fourth Proportional to 213,110.17, 319,411.04 and 99,104.08

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Solution

The fourth proportional to 213,110.17, 319,411.04 and 99,104.08 is: 148,537.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,110.17 : 319,411.04 = 99,104.08 : x
  2. Step 2: Convert to fraction form
    213,110.17/319,411.04 = 99,104.08/x
  3. Step 3: Cross multiply
    213,110.17x = 319,411.04 × 99,104.08
  4. Step 4: Simplify right side
    213,110.17x = 31,654,936,710.28
  5. Step 5: Solve for x
    x = 31,654,936,710.28/213,110.17
  6. Step 6: Final answer
    x = 148,537.90

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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.