Home / 429,095.55-642,858.40-200,972.31

Finding the Fourth Proportional to 429,095.55, 642,858.40 and 200,972.31

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Solution

The fourth proportional to 429,095.55, 642,858.40 and 200,972.31 is: 301,090.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,095.55 : 642,858.40 = 200,972.31 : x
  2. Step 2: Convert to fraction form
    429,095.55/642,858.40 = 200,972.31/x
  3. Step 3: Cross multiply
    429,095.55x = 642,858.40 × 200,972.31
  4. Step 4: Simplify right side
    429,095.55x = 129,196,740,350.28
  5. Step 5: Solve for x
    x = 129,196,740,350.28/429,095.55
  6. Step 6: Final answer
    x = 301,090.84

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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.