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Finding the Fourth Proportional to 219,212.73, 328,828.65 and 69,464.07

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Solution

The fourth proportional to 219,212.73, 328,828.65 and 69,464.07 is: 104,199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,212.73 : 328,828.65 = 69,464.07 : x
  2. Step 2: Convert to fraction form
    219,212.73/328,828.65 = 69,464.07/x
  3. Step 3: Cross multiply
    219,212.73x = 328,828.65 × 69,464.07
  4. Step 4: Simplify right side
    219,212.73x = 22,841,776,361.61
  5. Step 5: Solve for x
    x = 22,841,776,361.61/219,212.73
  6. Step 6: Final answer
    x = 104,199.13

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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.