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Finding the Fourth Proportional to 499,839.08, 689,775.85 and 270,395.80

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Solution

The fourth proportional to 499,839.08, 689,775.85 and 270,395.80 is: 373,145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,839.08 : 689,775.85 = 270,395.80 : x
  2. Step 2: Convert to fraction form
    499,839.08/689,775.85 = 270,395.80/x
  3. Step 3: Cross multiply
    499,839.08x = 689,775.85 × 270,395.80
  4. Step 4: Simplify right side
    499,839.08x = 186,512,490,381.00
  5. Step 5: Solve for x
    x = 186,512,490,381.00/499,839.08
  6. Step 6: Final answer
    x = 373,145.07

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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.