Home / 280,814.98-421,262.04-91,214.62

Finding the Fourth Proportional to 280,814.98, 421,262.04 and 91,214.62

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Solution

The fourth proportional to 280,814.98, 421,262.04 and 91,214.62 is: 136,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,814.98 : 421,262.04 = 91,214.62 : x
  2. Step 2: Convert to fraction form
    280,814.98/421,262.04 = 91,214.62/x
  3. Step 3: Cross multiply
    280,814.98x = 421,262.04 × 91,214.62
  4. Step 4: Simplify right side
    280,814.98x = 38,425,256,899.02
  5. Step 5: Solve for x
    x = 38,425,256,899.02/280,814.98
  6. Step 6: Final answer
    x = 136,834.78

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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.