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Finding the Fourth Proportional to 219,887.78, 303,445.72 and 119,285.78

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Solution

The fourth proportional to 219,887.78, 303,445.72 and 119,285.78 is: 164,614.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,887.78 : 303,445.72 = 119,285.78 : x
  2. Step 2: Convert to fraction form
    219,887.78/303,445.72 = 119,285.78/x
  3. Step 3: Cross multiply
    219,887.78x = 303,445.72 × 119,285.78
  4. Step 4: Simplify right side
    219,887.78x = 36,196,759,397.86
  5. Step 5: Solve for x
    x = 36,196,759,397.86/219,887.78
  6. Step 6: Final answer
    x = 164,614.69

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1.5x scale

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.