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Finding the Fourth Proportional to 365,709.72, 548,562.42 and 138,047.88

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Solution

The fourth proportional to 365,709.72, 548,562.42 and 138,047.88 is: 207,071.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,709.72 : 548,562.42 = 138,047.88 : x
  2. Step 2: Convert to fraction form
    365,709.72/548,562.42 = 138,047.88/x
  3. Step 3: Cross multiply
    365,709.72x = 548,562.42 × 138,047.88
  4. Step 4: Simplify right side
    365,709.72x = 75,727,879,128.67
  5. Step 5: Solve for x
    x = 75,727,879,128.67/365,709.72
  6. Step 6: Final answer
    x = 207,071.00

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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.