Home / 430,034.49-645,053.80-130,517.67

Finding the Fourth Proportional to 430,034.49, 645,053.80 and 130,517.67

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Solution

The fourth proportional to 430,034.49, 645,053.80 and 130,517.67 is: 195,777.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,034.49 : 645,053.80 = 130,517.67 : x
  2. Step 2: Convert to fraction form
    430,034.49/645,053.80 = 130,517.67/x
  3. Step 3: Cross multiply
    430,034.49x = 645,053.80 × 130,517.67
  4. Step 4: Simplify right side
    430,034.49x = 84,190,917,709.60
  5. Step 5: Solve for x
    x = 84,190,917,709.60/430,034.49
  6. Step 6: Final answer
    x = 195,777.13

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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.