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Finding the Fourth Proportional to 401,386.98, 553,930.98 and 229,333.26

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Solution

The fourth proportional to 401,386.98, 553,930.98 and 229,333.26 is: 316,489.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,386.98 : 553,930.98 = 229,333.26 : x
  2. Step 2: Convert to fraction form
    401,386.98/553,930.98 = 229,333.26/x
  3. Step 3: Cross multiply
    401,386.98x = 553,930.98 × 229,333.26
  4. Step 4: Simplify right side
    401,386.98x = 127,034,797,458.40
  5. Step 5: Solve for x
    x = 127,034,797,458.40/401,386.98
  6. Step 6: Final answer
    x = 316,489.58

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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.