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Finding the Fourth Proportional to 387,053.92, 534,105.36 and 217,255.52

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Solution

The fourth proportional to 387,053.92, 534,105.36 and 217,255.52 is: 299,796.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,053.92 : 534,105.36 = 217,255.52 : x
  2. Step 2: Convert to fraction form
    387,053.92/534,105.36 = 217,255.52/x
  3. Step 3: Cross multiply
    387,053.92x = 534,105.36 × 217,255.52
  4. Step 4: Simplify right side
    387,053.92x = 116,037,337,721.59
  5. Step 5: Solve for x
    x = 116,037,337,721.59/387,053.92
  6. Step 6: Final answer
    x = 299,796.31

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1.5x scale

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.