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Finding the Fourth Proportional to 219,877.32, 303,430.80 and 124,381.98

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Solution

The fourth proportional to 219,877.32, 303,430.80 and 124,381.98 is: 171,647.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,877.32 : 303,430.80 = 124,381.98 : x
  2. Step 2: Convert to fraction form
    219,877.32/303,430.80 = 124,381.98/x
  3. Step 3: Cross multiply
    219,877.32x = 303,430.80 × 124,381.98
  4. Step 4: Simplify right side
    219,877.32x = 37,741,323,696.98
  5. Step 5: Solve for x
    x = 37,741,323,696.98/219,877.32
  6. Step 6: Final answer
    x = 171,647.19

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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.