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Finding the Fourth Proportional to 499,719.50, 689,610.74 and 270,277.01

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Solution

The fourth proportional to 499,719.50, 689,610.74 and 270,277.01 is: 372,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,719.50 : 689,610.74 = 270,277.01 : x
  2. Step 2: Convert to fraction form
    499,719.50/689,610.74 = 270,277.01/x
  3. Step 3: Cross multiply
    499,719.50x = 689,610.74 × 270,277.01
  4. Step 4: Simplify right side
    499,719.50x = 186,385,924,071.65
  5. Step 5: Solve for x
    x = 186,385,924,071.65/499,719.50
  6. Step 6: Final answer
    x = 372,981.09

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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.