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Finding the Fourth Proportional to 531,479.16, 733,473.90 and 305,158.68

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Solution

The fourth proportional to 531,479.16, 733,473.90 and 305,158.68 is: 421,137.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,479.16 : 733,473.90 = 305,158.68 : x
  2. Step 2: Convert to fraction form
    531,479.16/733,473.90 = 305,158.68/x
  3. Step 3: Cross multiply
    531,479.16x = 733,473.90 × 305,158.68
  4. Step 4: Simplify right side
    531,479.16x = 223,825,927,138.45
  5. Step 5: Solve for x
    x = 223,825,927,138.45/531,479.16
  6. Step 6: Final answer
    x = 421,137.73

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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.