Home / 430,272.46-645,449.24-126,666.84

Finding the Fourth Proportional to 430,272.46, 645,449.24 and 126,666.84

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Solution

The fourth proportional to 430,272.46, 645,449.24 and 126,666.84 is: 190,012.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,272.46 : 645,449.24 = 126,666.84 : x
  2. Step 2: Convert to fraction form
    430,272.46/645,449.24 = 126,666.84/x
  3. Step 3: Cross multiply
    430,272.46x = 645,449.24 × 126,666.84
  4. Step 4: Simplify right side
    430,272.46x = 81,757,015,611.20
  5. Step 5: Solve for x
    x = 81,757,015,611.20/430,272.46
  6. Step 6: Final answer
    x = 190,012.20

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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.