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Finding the Fourth Proportional to 401,206.72, 553,342.44 and 352,704.94

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Solution

The fourth proportional to 401,206.72, 553,342.44 and 352,704.94 is: 486,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,206.72 : 553,342.44 = 352,704.94 : x
  2. Step 2: Convert to fraction form
    401,206.72/553,342.44 = 352,704.94/x
  3. Step 3: Cross multiply
    401,206.72x = 553,342.44 × 352,704.94
  4. Step 4: Simplify right side
    401,206.72x = 195,166,611,468.69
  5. Step 5: Solve for x
    x = 195,166,611,468.69/401,206.72
  6. Step 6: Final answer
    x = 486,449.01

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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.