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Finding the Fourth Proportional to 561,129.88, 841,140.76 and 223,967.40

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Solution

The fourth proportional to 561,129.88, 841,140.76 and 223,967.40 is: 335,729.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,129.88 : 841,140.76 = 223,967.40 : x
  2. Step 2: Convert to fraction form
    561,129.88/841,140.76 = 223,967.40/x
  3. Step 3: Cross multiply
    561,129.88x = 841,140.76 × 223,967.40
  4. Step 4: Simplify right side
    561,129.88x = 188,388,109,051.22
  5. Step 5: Solve for x
    x = 188,388,109,051.22/561,129.88
  6. Step 6: Final answer
    x = 335,729.95

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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.