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Finding the Fourth Proportional to 401,358.80, 553,853.86 and 229,242.96

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Solution

The fourth proportional to 401,358.80, 553,853.86 and 229,242.96 is: 316,343.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,358.80 : 553,853.86 = 229,242.96 : x
  2. Step 2: Convert to fraction form
    401,358.80/553,853.86 = 229,242.96/x
  3. Step 3: Cross multiply
    401,358.80x = 553,853.86 × 229,242.96
  4. Step 4: Simplify right side
    401,358.80x = 126,967,098,273.83
  5. Step 5: Solve for x
    x = 126,967,098,273.83/401,358.80
  6. Step 6: Final answer
    x = 316,343.13

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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.