Home / 378,125.16-521,823.80-208,370.20

Finding the Fourth Proportional to 378,125.16, 521,823.80 and 208,370.20

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Solution

The fourth proportional to 378,125.16, 521,823.80 and 208,370.20 is: 287,556.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,125.16 : 521,823.80 = 208,370.20 : x
  2. Step 2: Convert to fraction form
    378,125.16/521,823.80 = 208,370.20/x
  3. Step 3: Cross multiply
    378,125.16x = 521,823.80 × 208,370.20
  4. Step 4: Simplify right side
    378,125.16x = 108,732,529,570.76
  5. Step 5: Solve for x
    x = 108,732,529,570.76/378,125.16
  6. Step 6: Final answer
    x = 287,556.98

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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.