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Finding the Fourth Proportional to 424,416.70, 637,911.22 and 280,812.32

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Solution

The fourth proportional to 424,416.70, 637,911.22 and 280,812.32 is: 422,069.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,416.70 : 637,911.22 = 280,812.32 : x
  2. Step 2: Convert to fraction form
    424,416.70/637,911.22 = 280,812.32/x
  3. Step 3: Cross multiply
    424,416.70x = 637,911.22 × 280,812.32
  4. Step 4: Simplify right side
    424,416.70x = 179,133,329,642.23
  5. Step 5: Solve for x
    x = 179,133,329,642.23/424,416.70
  6. Step 6: Final answer
    x = 422,069.47

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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.