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Finding the Fourth Proportional to 531,197.79, 733,031.62 and 289,475.21

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Solution

The fourth proportional to 531,197.79, 733,031.62 and 289,475.21 is: 399,464.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,197.79 : 733,031.62 = 289,475.21 : x
  2. Step 2: Convert to fraction form
    531,197.79/733,031.62 = 289,475.21/x
  3. Step 3: Cross multiply
    531,197.79x = 733,031.62 × 289,475.21
  4. Step 4: Simplify right side
    531,197.79x = 212,194,482,136.14
  5. Step 5: Solve for x
    x = 212,194,482,136.14/531,197.79
  6. Step 6: Final answer
    x = 399,464.17

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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.