Home / 380,508.29-525,081.13-208,417.36

Finding the Fourth Proportional to 380,508.29, 525,081.13 and 208,417.36

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Solution

The fourth proportional to 380,508.29, 525,081.13 and 208,417.36 is: 287,604.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,508.29 : 525,081.13 = 208,417.36 : x
  2. Step 2: Convert to fraction form
    380,508.29/525,081.13 = 208,417.36/x
  3. Step 3: Cross multiply
    380,508.29x = 525,081.13 × 208,417.36
  4. Step 4: Simplify right side
    380,508.29x = 109,436,022,900.42
  5. Step 5: Solve for x
    x = 109,436,022,900.42/380,508.29
  6. Step 6: Final answer
    x = 287,604.83

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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.