Home / 378,111.04-521,774.40-208,317.76

Finding the Fourth Proportional to 378,111.04, 521,774.40 and 208,317.76

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Solution

The fourth proportional to 378,111.04, 521,774.40 and 208,317.76 is: 287,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,111.04 : 521,774.40 = 208,317.76 : x
  2. Step 2: Convert to fraction form
    378,111.04/521,774.40 = 208,317.76/x
  3. Step 3: Cross multiply
    378,111.04x = 521,774.40 × 208,317.76
  4. Step 4: Simplify right side
    378,111.04x = 108,694,874,233.34
  5. Step 5: Solve for x
    x = 108,694,874,233.34/378,111.04
  6. Step 6: Final answer
    x = 287,468.13

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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.