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Finding the Fourth Proportional to 424,940.10, 637,410.15 and 125,430.45

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Solution

The fourth proportional to 424,940.10, 637,410.15 and 125,430.45 is: 188,145.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,940.10 : 637,410.15 = 125,430.45 : x
  2. Step 2: Convert to fraction form
    424,940.10/637,410.15 = 125,430.45/x
  3. Step 3: Cross multiply
    424,940.10x = 637,410.15 × 125,430.45
  4. Step 4: Simplify right side
    424,940.10x = 79,950,641,949.07
  5. Step 5: Solve for x
    x = 79,950,641,949.07/424,940.10
  6. Step 6: Final answer
    x = 188,145.68

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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.