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Finding the Fourth Proportional to 386,588.37, 533,491.79 and 225,412.29

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Solution

The fourth proportional to 386,588.37, 533,491.79 and 225,412.29 is: 311,068.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,588.37 : 533,491.79 = 225,412.29 : x
  2. Step 2: Convert to fraction form
    386,588.37/533,491.79 = 225,412.29/x
  3. Step 3: Cross multiply
    386,588.37x = 533,491.79 × 225,412.29
  4. Step 4: Simplify right side
    386,588.37x = 120,255,604,953.04
  5. Step 5: Solve for x
    x = 120,255,604,953.04/386,588.37
  6. Step 6: Final answer
    x = 311,068.86

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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.