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Finding the Fourth Proportional to 256,535.80, 354,018.38 and 143,358.52

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Solution

The fourth proportional to 256,535.80, 354,018.38 and 143,358.52 is: 197,834.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,535.80 : 354,018.38 = 143,358.52 : x
  2. Step 2: Convert to fraction form
    256,535.80/354,018.38 = 143,358.52/x
  3. Step 3: Cross multiply
    256,535.80x = 354,018.38 × 143,358.52
  4. Step 4: Simplify right side
    256,535.80x = 50,751,551,009.60
  5. Step 5: Solve for x
    x = 50,751,551,009.60/256,535.80
  6. Step 6: Final answer
    x = 197,834.19

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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.