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Finding the Fourth Proportional to 219,053.80, 328,580.70 and 100,955.80

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Solution

The fourth proportional to 219,053.80, 328,580.70 and 100,955.80 is: 151,433.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,053.80 : 328,580.70 = 100,955.80 : x
  2. Step 2: Convert to fraction form
    219,053.80/328,580.70 = 100,955.80/x
  3. Step 3: Cross multiply
    219,053.80x = 328,580.70 × 100,955.80
  4. Step 4: Simplify right side
    219,053.80x = 33,172,127,433.06
  5. Step 5: Solve for x
    x = 33,172,127,433.06/219,053.80
  6. Step 6: Final answer
    x = 151,433.70

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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.