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Finding the Fourth Proportional to 568,134.99, 851,980.14 and 212,955.30

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Solution

The fourth proportional to 568,134.99, 851,980.14 and 212,955.30 is: 319,349.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,134.99 : 851,980.14 = 212,955.30 : x
  2. Step 2: Convert to fraction form
    568,134.99/851,980.14 = 212,955.30/x
  3. Step 3: Cross multiply
    568,134.99x = 851,980.14 × 212,955.30
  4. Step 4: Simplify right side
    568,134.99x = 181,433,686,307.74
  5. Step 5: Solve for x
    x = 181,433,686,307.74/568,134.99
  6. Step 6: Final answer
    x = 319,349.61

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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.