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Finding the Fourth Proportional to 485,865.63, 670,495.59 and 271,000.17

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Solution

The fourth proportional to 485,865.63, 670,495.59 and 271,000.17 is: 373,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,865.63 : 670,495.59 = 271,000.17 : x
  2. Step 2: Convert to fraction form
    485,865.63/670,495.59 = 271,000.17/x
  3. Step 3: Cross multiply
    485,865.63x = 670,495.59 × 271,000.17
  4. Step 4: Simplify right side
    485,865.63x = 181,704,418,874.25
  5. Step 5: Solve for x
    x = 181,704,418,874.25/485,865.63
  6. Step 6: Final answer
    x = 373,980.80

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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.