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Finding the Fourth Proportional to 505,519.26, 697,603.23 and 279,159.90

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Solution

The fourth proportional to 505,519.26, 697,603.23 and 279,159.90 is: 385,233.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,519.26 : 697,603.23 = 279,159.90 : x
  2. Step 2: Convert to fraction form
    505,519.26/697,603.23 = 279,159.90/x
  3. Step 3: Cross multiply
    505,519.26x = 697,603.23 × 279,159.90
  4. Step 4: Simplify right side
    505,519.26x = 194,742,847,926.48
  5. Step 5: Solve for x
    x = 194,742,847,926.48/505,519.26
  6. Step 6: Final answer
    x = 385,233.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.