Home / 420,271.92-579,972.50-238,983.86

Finding the Fourth Proportional to 420,271.92, 579,972.50 and 238,983.86

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Solution

The fourth proportional to 420,271.92, 579,972.50 and 238,983.86 is: 329,796.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,271.92 : 579,972.50 = 238,983.86 : x
  2. Step 2: Convert to fraction form
    420,271.92/579,972.50 = 238,983.86/x
  3. Step 3: Cross multiply
    420,271.92x = 579,972.50 × 238,983.86
  4. Step 4: Simplify right side
    420,271.92x = 138,604,066,743.85
  5. Step 5: Solve for x
    x = 138,604,066,743.85/420,271.92
  6. Step 6: Final answer
    x = 329,796.16

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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.