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Finding the Fourth Proportional to 485,647.20, 670,158.36 and 270,798.48

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Solution

The fourth proportional to 485,647.20, 670,158.36 and 270,798.48 is: 373,682.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,647.20 : 670,158.36 = 270,798.48 : x
  2. Step 2: Convert to fraction form
    485,647.20/670,158.36 = 270,798.48/x
  3. Step 3: Cross multiply
    485,647.20x = 670,158.36 × 270,798.48
  4. Step 4: Simplify right side
    485,647.20x = 181,477,865,247.29
  5. Step 5: Solve for x
    x = 181,477,865,247.29/485,647.20
  6. Step 6: Final answer
    x = 373,682.51

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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.