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Finding the Fourth Proportional to 316,998.07, 437,523.46 and 291,464.09

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Solution

The fourth proportional to 316,998.07, 437,523.46 and 291,464.09 is: 402,281.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,998.07 : 437,523.46 = 291,464.09 : x
  2. Step 2: Convert to fraction form
    316,998.07/437,523.46 = 291,464.09/x
  3. Step 3: Cross multiply
    316,998.07x = 437,523.46 × 291,464.09
  4. Step 4: Simplify right side
    316,998.07x = 127,522,375,846.99
  5. Step 5: Solve for x
    x = 127,522,375,846.99/316,998.07
  6. Step 6: Final answer
    x = 402,281.23

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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.