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Finding the Fourth Proportional to 531,358.32, 733,262.76 and 289,631.60

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Solution

The fourth proportional to 531,358.32, 733,262.76 and 289,631.60 is: 399,685.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,358.32 : 733,262.76 = 289,631.60 : x
  2. Step 2: Convert to fraction form
    531,358.32/733,262.76 = 289,631.60/x
  3. Step 3: Cross multiply
    531,358.32x = 733,262.76 × 289,631.60
  4. Step 4: Simplify right side
    531,358.32x = 212,376,066,399.22
  5. Step 5: Solve for x
    x = 212,376,066,399.22/531,358.32
  6. Step 6: Final answer
    x = 399,685.22

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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.