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Finding the Fourth Proportional to 359,917.74, 540,059.76 and 218,101.86

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Solution

The fourth proportional to 359,917.74, 540,059.76 and 218,101.86 is: 327,263.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,917.74 : 540,059.76 = 218,101.86 : x
  2. Step 2: Convert to fraction form
    359,917.74/540,059.76 = 218,101.86/x
  3. Step 3: Cross multiply
    359,917.74x = 540,059.76 × 218,101.86
  4. Step 4: Simplify right side
    359,917.74x = 117,788,038,167.15
  5. Step 5: Solve for x
    x = 117,788,038,167.15/359,917.74
  6. Step 6: Final answer
    x = 327,263.77

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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.