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Finding the Fourth Proportional to 219,081.80, 328,622.70 and 124,603.40

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Solution

The fourth proportional to 219,081.80, 328,622.70 and 124,603.40 is: 186,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,081.80 : 328,622.70 = 124,603.40 : x
  2. Step 2: Convert to fraction form
    219,081.80/328,622.70 = 124,603.40/x
  3. Step 3: Cross multiply
    219,081.80x = 328,622.70 × 124,603.40
  4. Step 4: Simplify right side
    219,081.80x = 40,947,505,737.18
  5. Step 5: Solve for x
    x = 40,947,505,737.18/219,081.80
  6. Step 6: Final answer
    x = 186,905.10

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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.