Home / 430,338.30-645,484.09-130,795.52

Finding the Fourth Proportional to 430,338.30, 645,484.09 and 130,795.52

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Solution

The fourth proportional to 430,338.30, 645,484.09 and 130,795.52 is: 196,186.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,338.30 : 645,484.09 = 130,795.52 : x
  2. Step 2: Convert to fraction form
    430,338.30/645,484.09 = 130,795.52/x
  3. Step 3: Cross multiply
    430,338.30x = 645,484.09 × 130,795.52
  4. Step 4: Simplify right side
    430,338.30x = 84,426,428,163.01
  5. Step 5: Solve for x
    x = 84,426,428,163.01/430,338.30
  6. Step 6: Final answer
    x = 196,186.18

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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.