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Finding the Fourth Proportional to 219,720.86, 303,222.94 and 124,221.86

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Solution

The fourth proportional to 219,720.86, 303,222.94 and 124,221.86 is: 171,430.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,720.86 : 303,222.94 = 124,221.86 : x
  2. Step 2: Convert to fraction form
    219,720.86/303,222.94 = 124,221.86/x
  3. Step 3: Cross multiply
    219,720.86x = 303,222.94 × 124,221.86
  4. Step 4: Simplify right side
    219,720.86x = 37,666,916,085.35
  5. Step 5: Solve for x
    x = 37,666,916,085.35/219,720.86
  6. Step 6: Final answer
    x = 171,430.77

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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.