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Finding the Fourth Proportional to 203,312.32, 280,571.65 and 112,669.79

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Solution

The fourth proportional to 203,312.32, 280,571.65 and 112,669.79 is: 155,484.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,312.32 : 280,571.65 = 112,669.79 : x
  2. Step 2: Convert to fraction form
    203,312.32/280,571.65 = 112,669.79/x
  3. Step 3: Cross multiply
    203,312.32x = 280,571.65 × 112,669.79
  4. Step 4: Simplify right side
    203,312.32x = 31,611,947,200.92
  5. Step 5: Solve for x
    x = 31,611,947,200.92/203,312.32
  6. Step 6: Final answer
    x = 155,484.66

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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.