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Finding the Fourth Proportional to 272,653.65, 408,816.45 and 139,793.40

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Solution

The fourth proportional to 272,653.65, 408,816.45 and 139,793.40 is: 209,606.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,653.65 : 408,816.45 = 139,793.40 : x
  2. Step 2: Convert to fraction form
    272,653.65/408,816.45 = 139,793.40/x
  3. Step 3: Cross multiply
    272,653.65x = 408,816.45 × 139,793.40
  4. Step 4: Simplify right side
    272,653.65x = 57,149,841,521.43
  5. Step 5: Solve for x
    x = 57,149,841,521.43/272,653.65
  6. Step 6: Final answer
    x = 209,606.00

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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.