Home / 386,309.30-579,630.45-208,941.17

Finding the Fourth Proportional to 386,309.30, 579,630.45 and 208,941.17

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Solution

The fourth proportional to 386,309.30, 579,630.45 and 208,941.17 is: 313,501.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,309.30 : 579,630.45 = 208,941.17 : x
  2. Step 2: Convert to fraction form
    386,309.30/579,630.45 = 208,941.17/x
  3. Step 3: Cross multiply
    386,309.30x = 579,630.45 × 208,941.17
  4. Step 4: Simplify right side
    386,309.30x = 121,108,664,390.63
  5. Step 5: Solve for x
    x = 121,108,664,390.63/386,309.30
  6. Step 6: Final answer
    x = 313,501.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.