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Finding the Fourth Proportional to 219,324.52, 328,988.40 and 53,112.52

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Solution

The fourth proportional to 219,324.52, 328,988.40 and 53,112.52 is: 79,669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,324.52 : 328,988.40 = 53,112.52 : x
  2. Step 2: Convert to fraction form
    219,324.52/328,988.40 = 53,112.52/x
  3. Step 3: Cross multiply
    219,324.52x = 328,988.40 × 53,112.52
  4. Step 4: Simplify right side
    219,324.52x = 17,473,402,974.77
  5. Step 5: Solve for x
    x = 17,473,402,974.77/219,324.52
  6. Step 6: Final answer
    x = 79,669.17

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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.