Home / 430,127.97-645,150.26-130,611.15

Finding the Fourth Proportional to 430,127.97, 645,150.26 and 130,611.15

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Solution

The fourth proportional to 430,127.97, 645,150.26 and 130,611.15 is: 195,904.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,127.97 : 645,150.26 = 130,611.15 : x
  2. Step 2: Convert to fraction form
    430,127.97/645,150.26 = 130,611.15/x
  3. Step 3: Cross multiply
    430,127.97x = 645,150.26 × 130,611.15
  4. Step 4: Simplify right side
    430,127.97x = 84,263,816,728.34
  5. Step 5: Solve for x
    x = 84,263,816,728.34/430,127.97
  6. Step 6: Final answer
    x = 195,904.06

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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.