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Finding the Fourth Proportional to 401,285.64, 553,665.06 and 239,998.44

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Solution

The fourth proportional to 401,285.64, 553,665.06 and 239,998.44 is: 331,132.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,285.64 : 553,665.06 = 239,998.44 : x
  2. Step 2: Convert to fraction form
    401,285.64/553,665.06 = 239,998.44/x
  3. Step 3: Cross multiply
    401,285.64x = 553,665.06 × 239,998.44
  4. Step 4: Simplify right side
    401,285.64x = 132,878,750,682.51
  5. Step 5: Solve for x
    x = 132,878,750,682.51/401,285.64
  6. Step 6: Final answer
    x = 331,132.58

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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.