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Finding the Fourth Proportional to 430,985.70, 646,262.28 and 251,129.25

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Solution

The fourth proportional to 430,985.70, 646,262.28 and 251,129.25 is: 376,567.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,985.70 : 646,262.28 = 251,129.25 : x
  2. Step 2: Convert to fraction form
    430,985.70/646,262.28 = 251,129.25/x
  3. Step 3: Cross multiply
    430,985.70x = 646,262.28 × 251,129.25
  4. Step 4: Simplify right side
    430,985.70x = 162,295,361,679.69
  5. Step 5: Solve for x
    x = 162,295,361,679.69/430,985.70
  6. Step 6: Final answer
    x = 376,567.86

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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.