Home / 430,036.74-645,057.18-130,519.92

Finding the Fourth Proportional to 430,036.74, 645,057.18 and 130,519.92

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Solution

The fourth proportional to 430,036.74, 645,057.18 and 130,519.92 is: 195,780.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,036.74 : 645,057.18 = 130,519.92 : x
  2. Step 2: Convert to fraction form
    430,036.74/645,057.18 = 130,519.92/x
  3. Step 3: Cross multiply
    430,036.74x = 645,057.18 × 130,519.92
  4. Step 4: Simplify right side
    430,036.74x = 84,192,811,529.03
  5. Step 5: Solve for x
    x = 84,192,811,529.03/430,036.74
  6. Step 6: Final answer
    x = 195,780.51

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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.