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Finding the Fourth Proportional to 203,159.88, 304,720.38 and 70,021.80

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Solution

The fourth proportional to 203,159.88, 304,720.38 and 70,021.80 is: 105,026.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,159.88 : 304,720.38 = 70,021.80 : x
  2. Step 2: Convert to fraction form
    203,159.88/304,720.38 = 70,021.80/x
  3. Step 3: Cross multiply
    203,159.88x = 304,720.38 × 70,021.80
  4. Step 4: Simplify right side
    203,159.88x = 21,337,069,504.28
  5. Step 5: Solve for x
    x = 21,337,069,504.28/203,159.88
  6. Step 6: Final answer
    x = 105,026.00

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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.