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Finding the Fourth Proportional to 430,959.70, 646,223.28 and 251,103.26

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Solution

The fourth proportional to 430,959.70, 646,223.28 and 251,103.26 is: 376,528.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,959.70 : 646,223.28 = 251,103.26 : x
  2. Step 2: Convert to fraction form
    430,959.70/646,223.28 = 251,103.26/x
  3. Step 3: Cross multiply
    430,959.70x = 646,223.28 × 251,103.26
  4. Step 4: Simplify right side
    430,959.70x = 162,268,772,295.89
  5. Step 5: Solve for x
    x = 162,268,772,295.89/430,959.70
  6. Step 6: Final answer
    x = 376,528.88

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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.