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Finding the Fourth Proportional to 496,955.80, 745,530.90 and 212,645.80

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Solution

The fourth proportional to 496,955.80, 745,530.90 and 212,645.80 is: 319,010.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,955.80 : 745,530.90 = 212,645.80 : x
  2. Step 2: Convert to fraction form
    496,955.80/745,530.90 = 212,645.80/x
  3. Step 3: Cross multiply
    496,955.80x = 745,530.90 × 212,645.80
  4. Step 4: Simplify right side
    496,955.80x = 158,534,014,655.22
  5. Step 5: Solve for x
    x = 158,534,014,655.22/496,955.80
  6. Step 6: Final answer
    x = 319,010.29

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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.