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Finding the Fourth Proportional to 497,014.80, 745,619.40 and 212,704.80

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Solution

The fourth proportional to 497,014.80, 745,619.40 and 212,704.80 is: 319,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,014.80 : 745,619.40 = 212,704.80 : x
  2. Step 2: Convert to fraction form
    497,014.80/745,619.40 = 212,704.80/x
  3. Step 3: Cross multiply
    497,014.80x = 745,619.40 × 212,704.80
  4. Step 4: Simplify right side
    497,014.80x = 158,596,825,353.12
  5. Step 5: Solve for x
    x = 158,596,825,353.12/497,014.80
  6. Step 6: Final answer
    x = 319,098.80

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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.