Home / 378,584.79-522,428.18-208,814.55

Finding the Fourth Proportional to 378,584.79, 522,428.18 and 208,814.55

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Solution

The fourth proportional to 378,584.79, 522,428.18 and 208,814.55 is: 288,153.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,584.79 : 522,428.18 = 208,814.55 : x
  2. Step 2: Convert to fraction form
    378,584.79/522,428.18 = 208,814.55/x
  3. Step 3: Cross multiply
    378,584.79x = 522,428.18 × 208,814.55
  4. Step 4: Simplify right side
    378,584.79x = 109,090,604,269.95
  5. Step 5: Solve for x
    x = 109,090,604,269.95/378,584.79
  6. Step 6: Final answer
    x = 288,153.69

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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.