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Finding the Fourth Proportional to 256,571.04, 354,061.92 and 143,404.32

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Solution

The fourth proportional to 256,571.04, 354,061.92 and 143,404.32 is: 197,894.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,571.04 : 354,061.92 = 143,404.32 : x
  2. Step 2: Convert to fraction form
    256,571.04/354,061.92 = 143,404.32/x
  3. Step 3: Cross multiply
    256,571.04x = 354,061.92 × 143,404.32
  4. Step 4: Simplify right side
    256,571.04x = 50,774,008,875.49
  5. Step 5: Solve for x
    x = 50,774,008,875.49/256,571.04
  6. Step 6: Final answer
    x = 197,894.54

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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.