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Finding the Fourth Proportional to 219,316.80, 328,720.05 and 101,000.10

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Solution

The fourth proportional to 219,316.80, 328,720.05 and 101,000.10 is: 151,382.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,316.80 : 328,720.05 = 101,000.10 : x
  2. Step 2: Convert to fraction form
    219,316.80/328,720.05 = 101,000.10/x
  3. Step 3: Cross multiply
    219,316.80x = 328,720.05 × 101,000.10
  4. Step 4: Simplify right side
    219,316.80x = 33,200,757,922.01
  5. Step 5: Solve for x
    x = 33,200,757,922.01/219,316.80
  6. Step 6: Final answer
    x = 151,382.65

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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.