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Finding the Fourth Proportional to 203,305.60, 280,570.68 and 112,661.32

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Solution

The fourth proportional to 203,305.60, 280,570.68 and 112,661.32 is: 155,477.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,305.60 : 280,570.68 = 112,661.32 : x
  2. Step 2: Convert to fraction form
    203,305.60/280,570.68 = 112,661.32/x
  3. Step 3: Cross multiply
    203,305.60x = 280,570.68 × 112,661.32
  4. Step 4: Simplify right side
    203,305.60x = 31,609,463,162.10
  5. Step 5: Solve for x
    x = 31,609,463,162.10/203,305.60
  6. Step 6: Final answer
    x = 155,477.58

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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.