Home / 430,752.12-646,128.03-115,200.83

Finding the Fourth Proportional to 430,752.12, 646,128.03 and 115,200.83

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Solution

The fourth proportional to 430,752.12, 646,128.03 and 115,200.83 is: 172,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,752.12 : 646,128.03 = 115,200.83 : x
  2. Step 2: Convert to fraction form
    430,752.12/646,128.03 = 115,200.83/x
  3. Step 3: Cross multiply
    430,752.12x = 646,128.03 × 115,200.83
  4. Step 4: Simplify right side
    430,752.12x = 74,434,485,342.26
  5. Step 5: Solve for x
    x = 74,434,485,342.26/430,752.12
  6. Step 6: Final answer
    x = 172,801.20

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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.