Home / 430,820.75-646,231.13-115,269.46

Finding the Fourth Proportional to 430,820.75, 646,231.13 and 115,269.46

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Solution

The fourth proportional to 430,820.75, 646,231.13 and 115,269.46 is: 172,904.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,820.75 : 646,231.13 = 115,269.46 : x
  2. Step 2: Convert to fraction form
    430,820.75/646,231.13 = 115,269.46/x
  3. Step 3: Cross multiply
    430,820.75x = 646,231.13 × 115,269.46
  4. Step 4: Simplify right side
    430,820.75x = 74,490,713,390.29
  5. Step 5: Solve for x
    x = 74,490,713,390.29/430,820.75
  6. Step 6: Final answer
    x = 172,904.19

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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.