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Finding the Fourth Proportional to 219,723.40, 329,730.90 and 124,953.40

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Solution

The fourth proportional to 219,723.40, 329,730.90 and 124,953.40 is: 187,513.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,723.40 : 329,730.90 = 124,953.40 : x
  2. Step 2: Convert to fraction form
    219,723.40/329,730.90 = 124,953.40/x
  3. Step 3: Cross multiply
    219,723.40x = 329,730.90 × 124,953.40
  4. Step 4: Simplify right side
    219,723.40x = 41,200,997,040.06
  5. Step 5: Solve for x
    x = 41,200,997,040.06/219,723.40
  6. Step 6: Final answer
    x = 187,513.01

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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.