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Finding the Fourth Proportional to 333,698.31, 500,543.25 and 80,980.89

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Solution

The fourth proportional to 333,698.31, 500,543.25 and 80,980.89 is: 121,470.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,698.31 : 500,543.25 = 80,980.89 : x
  2. Step 2: Convert to fraction form
    333,698.31/500,543.25 = 80,980.89/x
  3. Step 3: Cross multiply
    333,698.31x = 500,543.25 × 80,980.89
  4. Step 4: Simplify right side
    333,698.31x = 40,534,437,868.49
  5. Step 5: Solve for x
    x = 40,534,437,868.49/333,698.31
  6. Step 6: Final answer
    x = 121,470.31

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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.