Home / 421,716.60-581,979.20-240,445.69

Finding the Fourth Proportional to 421,716.60, 581,979.20 and 240,445.69

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Solution

The fourth proportional to 421,716.60, 581,979.20 and 240,445.69 is: 331,820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,716.60 : 581,979.20 = 240,445.69 : x
  2. Step 2: Convert to fraction form
    421,716.60/581,979.20 = 240,445.69/x
  3. Step 3: Cross multiply
    421,716.60x = 581,979.20 × 240,445.69
  4. Step 4: Simplify right side
    421,716.60x = 139,934,387,652.47
  5. Step 5: Solve for x
    x = 139,934,387,652.47/421,716.60
  6. Step 6: Final answer
    x = 331,820.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.