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Finding the Fourth Proportional to 401,053.79, 553,401.55 and 239,850.02

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Solution

The fourth proportional to 401,053.79, 553,401.55 and 239,850.02 is: 330,961.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,053.79 : 553,401.55 = 239,850.02 : x
  2. Step 2: Convert to fraction form
    401,053.79/553,401.55 = 239,850.02/x
  3. Step 3: Cross multiply
    401,053.79x = 553,401.55 × 239,850.02
  4. Step 4: Simplify right side
    401,053.79x = 132,733,372,835.53
  5. Step 5: Solve for x
    x = 132,733,372,835.53/401,053.79
  6. Step 6: Final answer
    x = 330,961.52

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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.