Home / 420,014.40-579,569.76-238,660.80

Finding the Fourth Proportional to 420,014.40, 579,569.76 and 238,660.80

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Solution

The fourth proportional to 420,014.40, 579,569.76 and 238,660.80 is: 329,323.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,014.40 : 579,569.76 = 238,660.80 : x
  2. Step 2: Convert to fraction form
    420,014.40/579,569.76 = 238,660.80/x
  3. Step 3: Cross multiply
    420,014.40x = 579,569.76 × 238,660.80
  4. Step 4: Simplify right side
    420,014.40x = 138,320,582,577.41
  5. Step 5: Solve for x
    x = 138,320,582,577.41/420,014.40
  6. Step 6: Final answer
    x = 329,323.43

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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.