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Finding the Fourth Proportional to 361,657.20, 542,485.80 and 343,225.20

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Solution

The fourth proportional to 361,657.20, 542,485.80 and 343,225.20 is: 514,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,657.20 : 542,485.80 = 343,225.20 : x
  2. Step 2: Convert to fraction form
    361,657.20/542,485.80 = 343,225.20/x
  3. Step 3: Cross multiply
    361,657.20x = 542,485.80 × 343,225.20
  4. Step 4: Simplify right side
    361,657.20x = 186,194,797,202.16
  5. Step 5: Solve for x
    x = 186,194,797,202.16/361,657.20
  6. Step 6: Final answer
    x = 514,837.80

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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.