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Finding the Fourth Proportional to 384,874.56, 531,117.72 and 215,124.48

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Solution

The fourth proportional to 384,874.56, 531,117.72 and 215,124.48 is: 296,866.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,874.56 : 531,117.72 = 215,124.48 : x
  2. Step 2: Convert to fraction form
    384,874.56/531,117.72 = 215,124.48/x
  3. Step 3: Cross multiply
    384,874.56x = 531,117.72 × 215,124.48
  4. Step 4: Simplify right side
    384,874.56x = 114,256,423,333.79
  5. Step 5: Solve for x
    x = 114,256,423,333.79/384,874.56
  6. Step 6: Final answer
    x = 296,866.66

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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.