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Finding the Fourth Proportional to 545,091.74, 817,575.30 and 145,763.64

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Solution

The fourth proportional to 545,091.74, 817,575.30 and 145,763.64 is: 218,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,091.74 : 817,575.30 = 145,763.64 : x
  2. Step 2: Convert to fraction form
    545,091.74/817,575.30 = 145,763.64/x
  3. Step 3: Cross multiply
    545,091.74x = 817,575.30 × 145,763.64
  4. Step 4: Simplify right side
    545,091.74x = 119,172,751,702.09
  5. Step 5: Solve for x
    x = 119,172,751,702.09/545,091.74
  6. Step 6: Final answer
    x = 218,628.80

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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.