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Finding the Fourth Proportional to 203,535.40, 280,892.46 and 112,920.16

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Solution

The fourth proportional to 203,535.40, 280,892.46 and 112,920.16 is: 155,837.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,535.40 : 280,892.46 = 112,920.16 : x
  2. Step 2: Convert to fraction form
    203,535.40/280,892.46 = 112,920.16/x
  3. Step 3: Cross multiply
    203,535.40x = 280,892.46 × 112,920.16
  4. Step 4: Simplify right side
    203,535.40x = 31,718,421,525.99
  5. Step 5: Solve for x
    x = 31,718,421,525.99/203,535.40
  6. Step 6: Final answer
    x = 155,837.37

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1.5x scale

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.