Home / 387,200.70-534,343.77-215,134.43

Finding the Fourth Proportional to 387,200.70, 534,343.77 and 215,134.43

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Solution

The fourth proportional to 387,200.70, 534,343.77 and 215,134.43 is: 296,889.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,200.70 : 534,343.77 = 215,134.43 : x
  2. Step 2: Convert to fraction form
    387,200.70/534,343.77 = 215,134.43/x
  3. Step 3: Cross multiply
    387,200.70x = 534,343.77 × 215,134.43
  4. Step 4: Simplify right side
    387,200.70x = 114,955,739,711.28
  5. Step 5: Solve for x
    x = 114,955,739,711.28/387,200.70
  6. Step 6: Final answer
    x = 296,889.29

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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.