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Finding the Fourth Proportional to 499,289.67, 689,019.66 and 272,935.17

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Solution

The fourth proportional to 499,289.67, 689,019.66 and 272,935.17 is: 376,650.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,289.67 : 689,019.66 = 272,935.17 : x
  2. Step 2: Convert to fraction form
    499,289.67/689,019.66 = 272,935.17/x
  3. Step 3: Cross multiply
    499,289.67x = 689,019.66 × 272,935.17
  4. Step 4: Simplify right side
    499,289.67x = 188,057,698,035.44
  5. Step 5: Solve for x
    x = 188,057,698,035.44/499,289.67
  6. Step 6: Final answer
    x = 376,650.49

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1.5x scale

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.