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Finding the Fourth Proportional to 501,689.77, 752,649.56 and 217,428.00

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Solution

The fourth proportional to 501,689.77, 752,649.56 and 217,428.00 is: 326,191.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,689.77 : 752,649.56 = 217,428.00 : x
  2. Step 2: Convert to fraction form
    501,689.77/752,649.56 = 217,428.00/x
  3. Step 3: Cross multiply
    501,689.77x = 752,649.56 × 217,428.00
  4. Step 4: Simplify right side
    501,689.77x = 163,647,085,437.46
  5. Step 5: Solve for x
    x = 163,647,085,437.46/501,689.77
  6. Step 6: Final answer
    x = 326,191.79

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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.