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Finding the Fourth Proportional to 418,984.87, 578,212.14 and 237,704.44

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Solution

The fourth proportional to 418,984.87, 578,212.14 and 237,704.44 is: 328,039.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,984.87 : 578,212.14 = 237,704.44 : x
  2. Step 2: Convert to fraction form
    418,984.87/578,212.14 = 237,704.44/x
  3. Step 3: Cross multiply
    418,984.87x = 578,212.14 × 237,704.44
  4. Step 4: Simplify right side
    418,984.87x = 137,443,592,939.90
  5. Step 5: Solve for x
    x = 137,443,592,939.90/418,984.87
  6. Step 6: Final answer
    x = 328,039.51

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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.