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Finding the Fourth Proportional to 496,978.30, 745,564.65 and 212,668.30

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Solution

The fourth proportional to 496,978.30, 745,564.65 and 212,668.30 is: 319,044.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,978.30 : 745,564.65 = 212,668.30 : x
  2. Step 2: Convert to fraction form
    496,978.30/745,564.65 = 212,668.30/x
  3. Step 3: Cross multiply
    496,978.30x = 745,564.65 × 212,668.30
  4. Step 4: Simplify right side
    496,978.30x = 158,557,966,655.60
  5. Step 5: Solve for x
    x = 158,557,966,655.60/496,978.30
  6. Step 6: Final answer
    x = 319,044.04

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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.