Home / 420,242.34-579,935.79-229,259.73

Finding the Fourth Proportional to 420,242.34, 579,935.79 and 229,259.73

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Solution

The fourth proportional to 420,242.34, 579,935.79 and 229,259.73 is: 316,379.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,242.34 : 579,935.79 = 229,259.73 : x
  2. Step 2: Convert to fraction form
    420,242.34/579,935.79 = 229,259.73/x
  3. Step 3: Cross multiply
    420,242.34x = 579,935.79 × 229,259.73
  4. Step 4: Simplify right side
    420,242.34x = 132,955,922,632.74
  5. Step 5: Solve for x
    x = 132,955,922,632.74/420,242.34
  6. Step 6: Final answer
    x = 316,379.17

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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.