Home / 420,143.77-579,795.73-238,855.74

Finding the Fourth Proportional to 420,143.77, 579,795.73 and 238,855.74

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Solution

The fourth proportional to 420,143.77, 579,795.73 and 238,855.74 is: 329,619.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,143.77 : 579,795.73 = 238,855.74 : x
  2. Step 2: Convert to fraction form
    420,143.77/579,795.73 = 238,855.74/x
  3. Step 3: Cross multiply
    420,143.77x = 579,795.73 × 238,855.74
  4. Step 4: Simplify right side
    420,143.77x = 138,487,538,137.99
  5. Step 5: Solve for x
    x = 138,487,538,137.99/420,143.77
  6. Step 6: Final answer
    x = 329,619.41

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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.