Home / 378,406.16-522,204.60-208,646.36

Finding the Fourth Proportional to 378,406.16, 522,204.60 and 208,646.36

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Solution

The fourth proportional to 378,406.16, 522,204.60 and 208,646.36 is: 287,934.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,406.16 : 522,204.60 = 208,646.36 : x
  2. Step 2: Convert to fraction form
    378,406.16/522,204.60 = 208,646.36/x
  3. Step 3: Cross multiply
    378,406.16x = 522,204.60 × 208,646.36
  4. Step 4: Simplify right side
    378,406.16x = 108,956,088,965.26
  5. Step 5: Solve for x
    x = 108,956,088,965.26/378,406.16
  6. Step 6: Final answer
    x = 287,934.24

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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.