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Finding the Fourth Proportional to 371,924.79, 513,503.37 and 285,730.26

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Solution

The fourth proportional to 371,924.79, 513,503.37 and 285,730.26 is: 394,497.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,924.79 : 513,503.37 = 285,730.26 : x
  2. Step 2: Convert to fraction form
    371,924.79/513,503.37 = 285,730.26/x
  3. Step 3: Cross multiply
    371,924.79x = 513,503.37 × 285,730.26
  4. Step 4: Simplify right side
    371,924.79x = 146,723,451,420.98
  5. Step 5: Solve for x
    x = 146,723,451,420.98/371,924.79
  6. Step 6: Final answer
    x = 394,497.64

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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.