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Finding the Fourth Proportional to 543,375.40, 815,026.64 and 144,007.60

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Solution

The fourth proportional to 543,375.40, 815,026.64 and 144,007.60 is: 216,001.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,375.40 : 815,026.64 = 144,007.60 : x
  2. Step 2: Convert to fraction form
    543,375.40/815,026.64 = 144,007.60/x
  3. Step 3: Cross multiply
    543,375.40x = 815,026.64 × 144,007.60
  4. Step 4: Simplify right side
    543,375.40x = 117,370,030,362.46
  5. Step 5: Solve for x
    x = 117,370,030,362.46/543,375.40
  6. Step 6: Final answer
    x = 216,001.74

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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.