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Finding the Fourth Proportional to 354,686.45, 531,730.11 and 165,048.98

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Solution

The fourth proportional to 354,686.45, 531,730.11 and 165,048.98 is: 247,434.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,686.45 : 531,730.11 = 165,048.98 : x
  2. Step 2: Convert to fraction form
    354,686.45/531,730.11 = 165,048.98/x
  3. Step 3: Cross multiply
    354,686.45x = 531,730.11 × 165,048.98
  4. Step 4: Simplify right side
    354,686.45x = 87,761,512,290.79
  5. Step 5: Solve for x
    x = 87,761,512,290.79/354,686.45
  6. Step 6: Final answer
    x = 247,434.07

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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.