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Finding the Fourth Proportional to 340,437.25, 510,609.91 and 140,729.93

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Solution

The fourth proportional to 340,437.25, 510,609.91 and 140,729.93 is: 211,075.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,437.25 : 510,609.91 = 140,729.93 : x
  2. Step 2: Convert to fraction form
    340,437.25/510,609.91 = 140,729.93/x
  3. Step 3: Cross multiply
    340,437.25x = 510,609.91 × 140,729.93
  4. Step 4: Simplify right side
    340,437.25x = 71,858,096,891.61
  5. Step 5: Solve for x
    x = 71,858,096,891.61/340,437.25
  6. Step 6: Final answer
    x = 211,075.89

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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.