Home / 203,288.45-280,533.87-112,643.62

Finding the Fourth Proportional to 203,288.45, 280,533.87 and 112,643.62

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Solution

The fourth proportional to 203,288.45, 280,533.87 and 112,643.62 is: 155,445.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,288.45 : 280,533.87 = 112,643.62 : x
  2. Step 2: Convert to fraction form
    203,288.45/280,533.87 = 112,643.62/x
  3. Step 3: Cross multiply
    203,288.45x = 280,533.87 × 112,643.62
  4. Step 4: Simplify right side
    203,288.45x = 31,600,349,948.07
  5. Step 5: Solve for x
    x = 31,600,349,948.07/203,288.45
  6. Step 6: Final answer
    x = 155,445.87

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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.