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Finding the Fourth Proportional to 219,248.12, 328,835.12 and 61,440.28

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Solution

The fourth proportional to 219,248.12, 328,835.12 and 61,440.28 is: 92,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,248.12 : 328,835.12 = 61,440.28 : x
  2. Step 2: Convert to fraction form
    219,248.12/328,835.12 = 61,440.28/x
  3. Step 3: Cross multiply
    219,248.12x = 328,835.12 × 61,440.28
  4. Step 4: Simplify right side
    219,248.12x = 20,203,721,846.63
  5. Step 5: Solve for x
    x = 20,203,721,846.63/219,248.12
  6. Step 6: Final answer
    x = 92,150.03

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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.