Home / 420,228.48-579,942.72-238,957.28

Finding the Fourth Proportional to 420,228.48, 579,942.72 and 238,957.28

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Solution

The fourth proportional to 420,228.48, 579,942.72 and 238,957.28 is: 329,776.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,228.48 : 579,942.72 = 238,957.28 : x
  2. Step 2: Convert to fraction form
    420,228.48/579,942.72 = 238,957.28/x
  3. Step 3: Cross multiply
    420,228.48x = 579,942.72 × 238,957.28
  4. Step 4: Simplify right side
    420,228.48x = 138,581,534,927.00
  5. Step 5: Solve for x
    x = 138,581,534,927.00/420,228.48
  6. Step 6: Final answer
    x = 329,776.64

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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.