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Finding the Fourth Proportional to 420,287.93, 579,996.67 and 229,301.34

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Solution

The fourth proportional to 420,287.93, 579,996.67 and 229,301.34 is: 316,435.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,287.93 : 579,996.67 = 229,301.34 : x
  2. Step 2: Convert to fraction form
    420,287.93/579,996.67 = 229,301.34/x
  3. Step 3: Cross multiply
    420,287.93x = 579,996.67 × 229,301.34
  4. Step 4: Simplify right side
    420,287.93x = 132,994,013,626.54
  5. Step 5: Solve for x
    x = 132,994,013,626.54/420,287.93
  6. Step 6: Final answer
    x = 316,435.48

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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.