Home / 420,273.92-579,975.26-238,985.86

Finding the Fourth Proportional to 420,273.92, 579,975.26 and 238,985.86

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Solution

The fourth proportional to 420,273.92, 579,975.26 and 238,985.86 is: 329,798.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,273.92 : 579,975.26 = 238,985.86 : x
  2. Step 2: Convert to fraction form
    420,273.92/579,975.26 = 238,985.86/x
  3. Step 3: Cross multiply
    420,273.92x = 579,975.26 × 238,985.86
  4. Step 4: Simplify right side
    420,273.92x = 138,605,886,289.82
  5. Step 5: Solve for x
    x = 138,605,886,289.82/420,273.92
  6. Step 6: Final answer
    x = 329,798.92

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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.