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Finding the Fourth Proportional to 499,382.12, 689,159.52 and 303,150.92

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Solution

The fourth proportional to 499,382.12, 689,159.52 and 303,150.92 is: 418,355.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,382.12 : 689,159.52 = 303,150.92 : x
  2. Step 2: Convert to fraction form
    499,382.12/689,159.52 = 303,150.92/x
  3. Step 3: Cross multiply
    499,382.12x = 689,159.52 × 303,150.92
  4. Step 4: Simplify right side
    499,382.12x = 208,919,342,514.76
  5. Step 5: Solve for x
    x = 208,919,342,514.76/499,382.12
  6. Step 6: Final answer
    x = 418,355.67

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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.