Home / 420,267.07-579,956.11-238,998.79

Finding the Fourth Proportional to 420,267.07, 579,956.11 and 238,998.79

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Solution

The fourth proportional to 420,267.07, 579,956.11 and 238,998.79 is: 329,811.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,267.07 : 579,956.11 = 238,998.79 : x
  2. Step 2: Convert to fraction form
    420,267.07/579,956.11 = 238,998.79/x
  3. Step 3: Cross multiply
    420,267.07x = 579,956.11 × 238,998.79
  4. Step 4: Simplify right side
    420,267.07x = 138,608,808,543.11
  5. Step 5: Solve for x
    x = 138,608,808,543.11/420,267.07
  6. Step 6: Final answer
    x = 329,811.25

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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.