Home / 378,669.72-522,564.18-208,903.85

Finding the Fourth Proportional to 378,669.72, 522,564.18 and 208,903.85

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Solution

The fourth proportional to 378,669.72, 522,564.18 and 208,903.85 is: 288,287.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,669.72 : 522,564.18 = 208,903.85 : x
  2. Step 2: Convert to fraction form
    378,669.72/522,564.18 = 208,903.85/x
  3. Step 3: Cross multiply
    378,669.72x = 522,564.18 × 208,903.85
  4. Step 4: Simplify right side
    378,669.72x = 109,165,666,461.27
  5. Step 5: Solve for x
    x = 109,165,666,461.27/378,669.72
  6. Step 6: Final answer
    x = 288,287.29

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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.