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Finding the Fourth Proportional to 219,872.32, 303,423.90 and 124,376.98

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Solution

The fourth proportional to 219,872.32, 303,423.90 and 124,376.98 is: 171,640.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,872.32 : 303,423.90 = 124,376.98 : x
  2. Step 2: Convert to fraction form
    219,872.32/303,423.90 = 124,376.98/x
  3. Step 3: Cross multiply
    219,872.32x = 303,423.90 × 124,376.98
  4. Step 4: Simplify right side
    219,872.32x = 37,738,948,341.82
  5. Step 5: Solve for x
    x = 37,738,948,341.82/219,872.32
  6. Step 6: Final answer
    x = 171,640.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.