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Finding the Fourth Proportional to 266,935.40, 400,403.10 and 89,383.40

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Solution

The fourth proportional to 266,935.40, 400,403.10 and 89,383.40 is: 134,075.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,935.40 : 400,403.10 = 89,383.40 : x
  2. Step 2: Convert to fraction form
    266,935.40/400,403.10 = 89,383.40/x
  3. Step 3: Cross multiply
    266,935.40x = 400,403.10 × 89,383.40
  4. Step 4: Simplify right side
    266,935.40x = 35,789,390,448.54
  5. Step 5: Solve for x
    x = 35,789,390,448.54/266,935.40
  6. Step 6: Final answer
    x = 134,075.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.