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Finding the Fourth Proportional to 219,133.86, 328,750.05 and 69,383.10

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Solution

The fourth proportional to 219,133.86, 328,750.05 and 69,383.10 is: 104,090.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,133.86 : 328,750.05 = 69,383.10 : x
  2. Step 2: Convert to fraction form
    219,133.86/328,750.05 = 69,383.10/x
  3. Step 3: Cross multiply
    219,133.86x = 328,750.05 × 69,383.10
  4. Step 4: Simplify right side
    219,133.86x = 22,809,697,594.16
  5. Step 5: Solve for x
    x = 22,809,697,594.16/219,133.86
  6. Step 6: Final answer
    x = 104,090.25

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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.