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Finding the Fourth Proportional to 545,857.17, 753,285.98 and 316,550.60

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Solution

The fourth proportional to 545,857.17, 753,285.98 and 316,550.60 is: 436,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,857.17 : 753,285.98 = 316,550.60 : x
  2. Step 2: Convert to fraction form
    545,857.17/753,285.98 = 316,550.60/x
  3. Step 3: Cross multiply
    545,857.17x = 753,285.98 × 316,550.60
  4. Step 4: Simplify right side
    545,857.17x = 238,453,132,540.20
  5. Step 5: Solve for x
    x = 238,453,132,540.20/545,857.17
  6. Step 6: Final answer
    x = 436,841.62

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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.