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Finding the Fourth Proportional to 303,454.40, 455,440.80 and 135,233.60

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Solution

The fourth proportional to 303,454.40, 455,440.80 and 135,233.60 is: 202,965.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,454.40 : 455,440.80 = 135,233.60 : x
  2. Step 2: Convert to fraction form
    303,454.40/455,440.80 = 135,233.60/x
  3. Step 3: Cross multiply
    303,454.40x = 455,440.80 × 135,233.60
  4. Step 4: Simplify right side
    303,454.40x = 61,590,898,970.88
  5. Step 5: Solve for x
    x = 61,590,898,970.88/303,454.40
  6. Step 6: Final answer
    x = 202,965.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.