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Finding the Fourth Proportional to 545,057.91, 817,590.51 and 190,070.55

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Solution

The fourth proportional to 545,057.91, 817,590.51 and 190,070.55 is: 285,107.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,057.91 : 817,590.51 = 190,070.55 : x
  2. Step 2: Convert to fraction form
    545,057.91/817,590.51 = 190,070.55/x
  3. Step 3: Cross multiply
    545,057.91x = 817,590.51 × 190,070.55
  4. Step 4: Simplify right side
    545,057.91x = 155,399,877,910.48
  5. Step 5: Solve for x
    x = 155,399,877,910.48/545,057.91
  6. Step 6: Final answer
    x = 285,107.10

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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.