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Finding the Fourth Proportional to 531,396.34, 797,266.64 and 318,130.90

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Solution

The fourth proportional to 531,396.34, 797,266.64 and 318,130.90 is: 477,299.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,396.34 : 797,266.64 = 318,130.90 : x
  2. Step 2: Convert to fraction form
    531,396.34/797,266.64 = 318,130.90/x
  3. Step 3: Cross multiply
    531,396.34x = 797,266.64 × 318,130.90
  4. Step 4: Simplify right side
    531,396.34x = 253,635,154,322.10
  5. Step 5: Solve for x
    x = 253,635,154,322.10/531,396.34
  6. Step 6: Final answer
    x = 477,299.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.