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Finding the Fourth Proportional to 401,655.83, 554,280.30 and 220,369.32

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Solution

The fourth proportional to 401,655.83, 554,280.30 and 220,369.32 is: 304,107.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,655.83 : 554,280.30 = 220,369.32 : x
  2. Step 2: Convert to fraction form
    401,655.83/554,280.30 = 220,369.32/x
  3. Step 3: Cross multiply
    401,655.83x = 554,280.30 × 220,369.32
  4. Step 4: Simplify right side
    401,655.83x = 122,146,372,800.40
  5. Step 5: Solve for x
    x = 122,146,372,800.40/401,655.83
  6. Step 6: Final answer
    x = 304,107.06

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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.