Home / 378,411.03-522,180.54-208,641.51

Finding the Fourth Proportional to 378,411.03, 522,180.54 and 208,641.51

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Solution

The fourth proportional to 378,411.03, 522,180.54 and 208,641.51 is: 287,910.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,411.03 : 522,180.54 = 208,641.51 : x
  2. Step 2: Convert to fraction form
    378,411.03/522,180.54 = 208,641.51/x
  3. Step 3: Cross multiply
    378,411.03x = 522,180.54 × 208,641.51
  4. Step 4: Simplify right side
    378,411.03x = 108,948,536,358.22
  5. Step 5: Solve for x
    x = 108,948,536,358.22/378,411.03
  6. Step 6: Final answer
    x = 287,910.57

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1.5x scale

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.