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Finding the Fourth Proportional to 330,510.80, 455,964.36 and 203,145.68

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Solution

The fourth proportional to 330,510.80, 455,964.36 and 203,145.68 is: 280,254.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,510.80 : 455,964.36 = 203,145.68 : x
  2. Step 2: Convert to fraction form
    330,510.80/455,964.36 = 203,145.68/x
  3. Step 3: Cross multiply
    330,510.80x = 455,964.36 × 203,145.68
  4. Step 4: Simplify right side
    330,510.80x = 92,627,189,967.96
  5. Step 5: Solve for x
    x = 92,627,189,967.96/330,510.80
  6. Step 6: Final answer
    x = 280,254.65

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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.