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Finding the Fourth Proportional to 401,044, 553,388 and 239,840.16

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Solution

The fourth proportional to 401,044, 553,388 and 239,840.16 is: 330,947.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,044 : 553,388 = 239,840.16 : x
  2. Step 2: Convert to fraction form
    401,044/553,388 = 239,840.16/x
  3. Step 3: Cross multiply
    401,044x = 553,388 × 239,840.16
  4. Step 4: Simplify right side
    401,044x = 132,724,666,462.08
  5. Step 5: Solve for x
    x = 132,724,666,462.08/401,044
  6. Step 6: Final answer
    x = 330,947.89

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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.