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Finding the Fourth Proportional to 531,228.96, 733,074.56 and 289,506.40

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Solution

The fourth proportional to 531,228.96, 733,074.56 and 289,506.40 is: 399,507.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,228.96 : 733,074.56 = 289,506.40 : x
  2. Step 2: Convert to fraction form
    531,228.96/733,074.56 = 289,506.40/x
  3. Step 3: Cross multiply
    531,228.96x = 733,074.56 × 289,506.40
  4. Step 4: Simplify right side
    531,228.96x = 212,229,776,797.18
  5. Step 5: Solve for x
    x = 212,229,776,797.18/531,228.96
  6. Step 6: Final answer
    x = 399,507.17

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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.