Home / 430,119.52-645,310.48-219,905.12

Finding the Fourth Proportional to 430,119.52, 645,310.48 and 219,905.12

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Solution

The fourth proportional to 430,119.52, 645,310.48 and 219,905.12 is: 329,924.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,119.52 : 645,310.48 = 219,905.12 : x
  2. Step 2: Convert to fraction form
    430,119.52/645,310.48 = 219,905.12/x
  3. Step 3: Cross multiply
    430,119.52x = 645,310.48 × 219,905.12
  4. Step 4: Simplify right side
    430,119.52x = 141,907,078,541.66
  5. Step 5: Solve for x
    x = 141,907,078,541.66/430,119.52
  6. Step 6: Final answer
    x = 329,924.76

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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.