Home / 430,749.12-646,123.53-115,197.83

Finding the Fourth Proportional to 430,749.12, 646,123.53 and 115,197.83

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Solution

The fourth proportional to 430,749.12, 646,123.53 and 115,197.83 is: 172,796.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,749.12 : 646,123.53 = 115,197.83 : x
  2. Step 2: Convert to fraction form
    430,749.12/646,123.53 = 115,197.83/x
  3. Step 3: Cross multiply
    430,749.12x = 646,123.53 × 115,197.83
  4. Step 4: Simplify right side
    430,749.12x = 74,432,028,192.28
  5. Step 5: Solve for x
    x = 74,432,028,192.28/430,749.12
  6. Step 6: Final answer
    x = 172,796.70

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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.