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Finding the Fourth Proportional to 485,732.08, 670,313.04 and 270,881.20

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Solution

The fourth proportional to 485,732.08, 670,313.04 and 270,881.20 is: 373,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,732.08 : 670,313.04 = 270,881.20 : x
  2. Step 2: Convert to fraction form
    485,732.08/670,313.04 = 270,881.20/x
  3. Step 3: Cross multiply
    485,732.08x = 670,313.04 × 270,881.20
  4. Step 4: Simplify right side
    485,732.08x = 181,575,200,650.85
  5. Step 5: Solve for x
    x = 181,575,200,650.85/485,732.08
  6. Step 6: Final answer
    x = 373,817.60

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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.