Home / 430,820.76-646,181.90-115,302.27

Finding the Fourth Proportional to 430,820.76, 646,181.90 and 115,302.27

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Solution

The fourth proportional to 430,820.76, 646,181.90 and 115,302.27 is: 172,940.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,820.76 : 646,181.90 = 115,302.27 : x
  2. Step 2: Convert to fraction form
    430,820.76/646,181.90 = 115,302.27/x
  3. Step 3: Cross multiply
    430,820.76x = 646,181.90 × 115,302.27
  4. Step 4: Simplify right side
    430,820.76x = 74,506,239,902.91
  5. Step 5: Solve for x
    x = 74,506,239,902.91/430,820.76
  6. Step 6: Final answer
    x = 172,940.23

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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.