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Finding the Fourth Proportional to 401,368.40, 553,913.24 and 222,520.40

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Solution

The fourth proportional to 401,368.40, 553,913.24 and 222,520.40 is: 307,091.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,368.40 : 553,913.24 = 222,520.40 : x
  2. Step 2: Convert to fraction form
    401,368.40/553,913.24 = 222,520.40/x
  3. Step 3: Cross multiply
    401,368.40x = 553,913.24 × 222,520.40
  4. Step 4: Simplify right side
    401,368.40x = 123,256,995,730.10
  5. Step 5: Solve for x
    x = 123,256,995,730.10/401,368.40
  6. Step 6: Final answer
    x = 307,091.93

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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.