Home / 218,971.90-328,355.76-113,762.62

Finding the Fourth Proportional to 218,971.90, 328,355.76 and 113,762.62

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Solution

The fourth proportional to 218,971.90, 328,355.76 and 113,762.62 is: 170,590.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,971.90 : 328,355.76 = 113,762.62 : x
  2. Step 2: Convert to fraction form
    218,971.90/328,355.76 = 113,762.62/x
  3. Step 3: Cross multiply
    218,971.90x = 328,355.76 × 113,762.62
  4. Step 4: Simplify right side
    218,971.90x = 37,354,611,549.69
  5. Step 5: Solve for x
    x = 37,354,611,549.69/218,971.90
  6. Step 6: Final answer
    x = 170,590.89

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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.